diff --git a/src/main/java/dk/camelot64/kickc/model/VariableBuilder.java b/src/main/java/dk/camelot64/kickc/model/VariableBuilder.java
index 519613359..d9777f941 100644
--- a/src/main/java/dk/camelot64/kickc/model/VariableBuilder.java
+++ b/src/main/java/dk/camelot64/kickc/model/VariableBuilder.java
@@ -319,7 +319,7 @@ public class VariableBuilder {
          return Variable.MemoryArea.ZEROPAGE_MEMORY;
       else if(hasDirective(Directive.MemMain.class))
          return Variable.MemoryArea.MAIN_MEMORY;
-      Directive.Address addressDirective = findDirective(Directive.Address.class);
+      Directive.Address addressDirective = findDirective(Directive.Address.class, directives);
       if(addressDirective != null)
          return (addressDirective.address < 0x100) ? Variable.MemoryArea.ZEROPAGE_MEMORY : Variable.MemoryArea.MAIN_MEMORY;
       else if(!isConstant() && isOptimize())
@@ -341,7 +341,7 @@ public class VariableBuilder {
     * @return The memory alignment
     */
    public Integer getAlignment() {
-      Directive.Align alignDirective = findDirective(Directive.Align.class);
+      Directive.Align alignDirective = findDirective(Directive.Align.class, directives);
       if(alignDirective != null) {
          if(isArray()) {
             return alignDirective.alignment;
@@ -359,7 +359,7 @@ public class VariableBuilder {
     * @return Hard-coded register allocation. Null if not hard-coded.
     */
    public Registers.Register getRegister() {
-      Directive.Address addressDirective = findDirective(Directive.Address.class);
+      Directive.Address addressDirective = findDirective(Directive.Address.class, directives);
       if(addressDirective != null) {
          Variable.MemoryArea memoryArea = (addressDirective.address < 0x100) ? Variable.MemoryArea.ZEROPAGE_MEMORY : Variable.MemoryArea.MAIN_MEMORY;
          if(Variable.MemoryArea.ZEROPAGE_MEMORY.equals(memoryArea)) {
@@ -370,7 +370,7 @@ public class VariableBuilder {
          }
       }
 
-      Directive.NamedRegister registerDirective = findDirective(Directive.NamedRegister.class);
+      Directive.NamedRegister registerDirective = findDirective(Directive.NamedRegister.class, directives);
       if(registerDirective != null) {
          Registers.Register register = Registers.getRegister(registerDirective.name);
          if(register == null) {
@@ -391,8 +391,18 @@ public class VariableBuilder {
     * @param <DirectiveClass> The class of the type to look for
     * @return true if the directive if found. false otherwise.
     */
-   public <DirectiveClass extends Directive> boolean hasDirective(Class<DirectiveClass> directiveClass) {
-      return findDirective(directiveClass) != null;
+   private <DirectiveClass extends Directive> boolean hasDirective(Class<DirectiveClass> directiveClass) {
+      return findDirective(directiveClass, directives) != null;
+   }
+   /**
+    * Examines whether a specific directive is present in the source
+    *
+    * @param directiveClass The class of the type to look for
+    * @param <DirectiveClass> The class of the type to look for
+    * @return true if the directive if found. false otherwise.
+    */
+   public static <DirectiveClass extends Directive> boolean hasDirective(Class<DirectiveClass> directiveClass, List<Directive> directives) {
+      return findDirective(directiveClass, directives) != null;
    }
 
    /**
@@ -402,7 +412,7 @@ public class VariableBuilder {
     * @param <DirectiveClass> The class of the type to look for
     * @return The directive if found. null if not found.
     */
-   private <DirectiveClass extends Directive> DirectiveClass findDirective(Class<DirectiveClass> directiveClass) {
+   private static <DirectiveClass extends Directive> DirectiveClass findDirective(Class<DirectiveClass> directiveClass, List<Directive> directives) {
       if(directives == null) return null;
       for(Directive directive : directives) {
          if(directiveClass.isInstance(directive)) {
diff --git a/src/main/java/dk/camelot64/kickc/passes/Pass0GenerateStatementSequence.java b/src/main/java/dk/camelot64/kickc/passes/Pass0GenerateStatementSequence.java
index 2d070edd8..9a0b37ecf 100644
--- a/src/main/java/dk/camelot64/kickc/passes/Pass0GenerateStatementSequence.java
+++ b/src/main/java/dk/camelot64/kickc/passes/Pass0GenerateStatementSequence.java
@@ -261,12 +261,15 @@ public class Pass0GenerateStatementSequence extends KickCParserBaseVisitor<Objec
          program.getScope().add(procedure);
       }
 
-      if(ctx.declFunctionBody() != null) {
-         // Make sure directives and more are taken from the procedure with the body!
+      if(ctx.declFunctionBody() != null || VariableBuilder.hasDirective(Directive.Intrinsic.class, directives)) {
+         // Make sure directives and more are taken from the procedure with the body / intrinsic declaration!
          if(existingSymbol != null) {
             program.getScope().remove(existingSymbol);
             program.getScope().add(procedure);
          }
+      }
+
+      if(ctx.declFunctionBody() != null) {
 
          // Check that the body has not already been added
          for(Statement statement : sequence.getStatements())
diff --git a/src/main/kc/include/printf.h b/src/main/kc/include/printf.h
index 0bef0e125..f875b9094 100644
--- a/src/main/kc/include/printf.h
+++ b/src/main/kc/include/printf.h
@@ -6,7 +6,7 @@
 // Print a formatted string.
 // https://en.wikipedia.org/wiki/Printf_format_string
 // This implementation supports decimal, octal and hexadecimal radix. It supports min length, left/right justify, zero-padding and always-sign.
-__intrinsic void printf(char* format, ...);
+void printf(char* format, ...);
 
 // Clear the screen. Also places cursor at the top left.
 void printf_cls();
diff --git a/src/test/java/dk/camelot64/kickc/test/TestPrograms.java b/src/test/java/dk/camelot64/kickc/test/TestPrograms.java
index a57fdb3e0..6945670fb 100644
--- a/src/test/java/dk/camelot64/kickc/test/TestPrograms.java
+++ b/src/test/java/dk/camelot64/kickc/test/TestPrograms.java
@@ -205,6 +205,11 @@ public class TestPrograms {
       assertError("cstyle-decl-function-mismatch.c", "Error! Conflicting declarations for: sum");
    }
 
+   @Test
+   public void testCStyleDeclFunctionIntrinsic() throws IOException, URISyntaxException {
+      compileAndCompare("cstyle-decl-function-intrinsic.c");
+   }
+
    @Test
    public void testCStyleDeclFunction() throws IOException, URISyntaxException {
       compileAndCompare("cstyle-decl-function.c");
diff --git a/src/test/kc/cstyle-decl-function-intrinsic.c b/src/test/kc/cstyle-decl-function-intrinsic.c
new file mode 100644
index 000000000..a61c3d06f
--- /dev/null
+++ b/src/test/kc/cstyle-decl-function-intrinsic.c
@@ -0,0 +1,17 @@
+// Test declaration of intrinsic without body
+
+// Declaration of printf-function
+void printf(char* format, ...);
+
+// Intrinsic definition of printf-function
+__intrinsic void printf(char* format, ...);
+
+// Definition of main()
+void main() {
+}
+
+
+
+
+
+
diff --git a/src/test/ref/cstyle-decl-function-intrinsic.asm b/src/test/ref/cstyle-decl-function-intrinsic.asm
new file mode 100644
index 000000000..d215bfb38
--- /dev/null
+++ b/src/test/ref/cstyle-decl-function-intrinsic.asm
@@ -0,0 +1,9 @@
+// Test declaration of intrinsic without body
+.pc = $801 "Basic"
+:BasicUpstart(main)
+.pc = $80d "Program"
+// Definition of main()
+main: {
+    // }
+    rts
+}
diff --git a/src/test/ref/cstyle-decl-function-intrinsic.cfg b/src/test/ref/cstyle-decl-function-intrinsic.cfg
new file mode 100644
index 000000000..42ac9065a
--- /dev/null
+++ b/src/test/ref/cstyle-decl-function-intrinsic.cfg
@@ -0,0 +1,17 @@
+@begin: scope:[]  from
+  [0] phi()
+  to:@1
+@1: scope:[]  from @begin
+  [1] phi()
+  [2] call main 
+  to:@end
+@end: scope:[]  from @1
+  [3] phi()
+
+(void()) main()
+main: scope:[main]  from @1
+  [4] phi()
+  to:main::@return
+main::@return: scope:[main]  from main
+  [5] return 
+  to:@return
diff --git a/src/test/ref/cstyle-decl-function-intrinsic.log b/src/test/ref/cstyle-decl-function-intrinsic.log
new file mode 100644
index 000000000..3400b639a
--- /dev/null
+++ b/src/test/ref/cstyle-decl-function-intrinsic.log
@@ -0,0 +1,203 @@
+
+CONTROL FLOW GRAPH SSA
+@begin: scope:[]  from
+  to:@1
+
+(void()) main()
+main: scope:[main]  from @1
+  to:main::@return
+main::@return: scope:[main]  from main
+  return 
+  to:@return
+@1: scope:[]  from @begin
+  call main 
+  to:@2
+@2: scope:[]  from @1
+  to:@end
+@end: scope:[]  from @2
+
+SYMBOL TABLE SSA
+(label) @1
+(label) @2
+(label) @begin
+(label) @end
+(void()) main()
+(label) main::@return
+
+Adding NOP phi() at start of @begin
+Adding NOP phi() at start of @1
+Adding NOP phi() at start of @2
+Adding NOP phi() at start of @end
+Adding NOP phi() at start of main
+CALL GRAPH
+Calls in [] to main:2 
+
+Created 0 initial phi equivalence classes
+Coalesced down to 0 phi equivalence classes
+Culled Empty Block (label) @2
+Adding NOP phi() at start of @begin
+Adding NOP phi() at start of @1
+Adding NOP phi() at start of @end
+Adding NOP phi() at start of main
+
+FINAL CONTROL FLOW GRAPH
+@begin: scope:[]  from
+  [0] phi()
+  to:@1
+@1: scope:[]  from @begin
+  [1] phi()
+  [2] call main 
+  to:@end
+@end: scope:[]  from @1
+  [3] phi()
+
+(void()) main()
+main: scope:[main]  from @1
+  [4] phi()
+  to:main::@return
+main::@return: scope:[main]  from main
+  [5] return 
+  to:@return
+
+
+VARIABLE REGISTER WEIGHTS
+(void()) main()
+
+Initial phi equivalence classes
+Complete equivalence classes
+
+INITIAL ASM
+Target platform is c64basic / MOS6502X
+  // File Comments
+// Test declaration of intrinsic without body
+  // Upstart
+.pc = $801 "Basic"
+:BasicUpstart(__bbegin)
+.pc = $80d "Program"
+  // Global Constants & labels
+  // @begin
+__bbegin:
+  // [1] phi from @begin to @1 [phi:@begin->@1]
+__b1_from___bbegin:
+  jmp __b1
+  // @1
+__b1:
+  // [2] call main 
+  // [4] phi from @1 to main [phi:@1->main]
+main_from___b1:
+  jsr main
+  // [3] phi from @1 to @end [phi:@1->@end]
+__bend_from___b1:
+  jmp __bend
+  // @end
+__bend:
+  // main
+// Definition of main()
+main: {
+    jmp __breturn
+    // main::@return
+  __breturn:
+    // [5] return 
+    rts
+}
+  // File Data
+
+REGISTER UPLIFT POTENTIAL REGISTERS
+
+REGISTER UPLIFT SCOPES
+Uplift Scope [main] 
+Uplift Scope [] 
+
+Uplifting [main] best 48 combination 
+Uplifting [] best 48 combination 
+
+ASSEMBLER BEFORE OPTIMIZATION
+  // File Comments
+// Test declaration of intrinsic without body
+  // Upstart
+.pc = $801 "Basic"
+:BasicUpstart(__bbegin)
+.pc = $80d "Program"
+  // Global Constants & labels
+  // @begin
+__bbegin:
+  // [1] phi from @begin to @1 [phi:@begin->@1]
+__b1_from___bbegin:
+  jmp __b1
+  // @1
+__b1:
+  // [2] call main 
+  // [4] phi from @1 to main [phi:@1->main]
+main_from___b1:
+  jsr main
+  // [3] phi from @1 to @end [phi:@1->@end]
+__bend_from___b1:
+  jmp __bend
+  // @end
+__bend:
+  // main
+// Definition of main()
+main: {
+    jmp __breturn
+    // main::@return
+  __breturn:
+    // [5] return 
+    rts
+}
+  // File Data
+
+ASSEMBLER OPTIMIZATIONS
+Removing instruction jmp __b1
+Removing instruction jmp __bend
+Removing instruction jmp __breturn
+Succesful ASM optimization Pass5NextJumpElimination
+Removing instruction __b1_from___bbegin:
+Removing instruction __b1:
+Removing instruction main_from___b1:
+Removing instruction __bend_from___b1:
+Succesful ASM optimization Pass5RedundantLabelElimination
+Removing instruction __bend:
+Removing instruction __breturn:
+Succesful ASM optimization Pass5UnusedLabelElimination
+Updating BasicUpstart to call main directly
+Removing instruction jsr main
+Succesful ASM optimization Pass5SkipBegin
+Removing instruction __bbegin:
+Succesful ASM optimization Pass5UnusedLabelElimination
+
+FINAL SYMBOL TABLE
+(label) @1
+(label) @begin
+(label) @end
+(void()) main()
+(label) main::@return
+
+
+
+FINAL ASSEMBLER
+Score: 6
+
+  // File Comments
+// Test declaration of intrinsic without body
+  // Upstart
+.pc = $801 "Basic"
+:BasicUpstart(main)
+.pc = $80d "Program"
+  // Global Constants & labels
+  // @begin
+  // [1] phi from @begin to @1 [phi:@begin->@1]
+  // @1
+  // [2] call main 
+  // [4] phi from @1 to main [phi:@1->main]
+  // [3] phi from @1 to @end [phi:@1->@end]
+  // @end
+  // main
+// Definition of main()
+main: {
+    // main::@return
+    // }
+    // [5] return 
+    rts
+}
+  // File Data
+
diff --git a/src/test/ref/cstyle-decl-function-intrinsic.sym b/src/test/ref/cstyle-decl-function-intrinsic.sym
new file mode 100644
index 000000000..5b1ee8133
--- /dev/null
+++ b/src/test/ref/cstyle-decl-function-intrinsic.sym
@@ -0,0 +1,6 @@
+(label) @1
+(label) @begin
+(label) @end
+(void()) main()
+(label) main::@return
+