diff --git a/compiler/examples/test.p8 b/compiler/examples/test.p8
index f8cd7cbbf..301779a23 100644
--- a/compiler/examples/test.p8
+++ b/compiler/examples/test.p8
@@ -24,11 +24,6 @@ sub start() {
     c64.CHROUT(memubytearray[1])
     c64.CHROUT(ubytearray[X])
     c64.CHROUT(memubytearray[X])
-    c64.CHROUT(b1)          ; @todo fix compiler crash   incompatible data types
-    c64.CHROUT(mb1)         ; @todo fix compiler crash   incompatible data types
-    c64.CHROUT(bytearray[1])       ; @todo fix compiler crash   incompatible data types
-    c64.CHROUT(membytearray[1])     ; @todo fix compiler crash   incompatible data types
-    c64.CHROUT(wordarray[1])        ; @todo fix compiler crash   incompatible data types
 
     testsub(X)
     testsub(ub1)
@@ -37,11 +32,6 @@ sub start() {
     testsub(memubytearray[1])
     testsub(ubytearray[X])
     testsub(memubytearray[X])
-    testsub(b1)        ; @todo should give datatype error
-    testsub(mb1)       ; @todo should give datatype error
-    testsub(bytearray[1])      ; @todo should give datatype error
-    testsub(membytearray[1])  ; @todo should give datatype error
-    testsub(wordarray[1])     ; @todo should give datatype error
 
     return
 }
diff --git a/compiler/src/prog8/ast/AST.kt b/compiler/src/prog8/ast/AST.kt
index b10abfc44..1608e36bd 100644
--- a/compiler/src/prog8/ast/AST.kt
+++ b/compiler/src/prog8/ast/AST.kt
@@ -31,22 +31,22 @@ enum class DataType {
     ARRAY_W,
     ARRAY_F;
 
-    fun assignableTo(type: DataType) =
+    fun assignableTo(targetType: DataType) =
             when(this) {
-                UBYTE -> type in NumericDatatypes
-                BYTE -> type in NumericDatatypes
-                UWORD -> type in NumericDatatypes
-                WORD -> type in NumericDatatypes
-                FLOAT -> type in NumericDatatypes
-                STR -> type == STR || type==STR_S || type == UWORD
-                STR_P -> type == STR_P || type==STR_PS || type == UWORD
-                STR_S -> type == STR || type==STR_S || type == UWORD
-                STR_PS -> type == STR_P || type==STR_PS || type == UWORD
-                ARRAY_UB -> type == UWORD
-                ARRAY_B -> type == UWORD
-                ARRAY_UW -> type == UWORD
-                ARRAY_W -> type == UWORD
-                ARRAY_F -> type == UWORD
+                UBYTE -> targetType == UBYTE || targetType == UWORD || targetType == FLOAT
+                BYTE -> targetType == BYTE || targetType == WORD || targetType == FLOAT
+                UWORD -> targetType == UWORD || targetType == FLOAT
+                WORD -> targetType == WORD || targetType == FLOAT
+                FLOAT -> targetType == FLOAT
+                STR -> targetType == STR || targetType==STR_S || targetType == UWORD
+                STR_P -> targetType == STR_P || targetType==STR_PS || targetType == UWORD
+                STR_S -> targetType == STR || targetType==STR_S || targetType == UWORD
+                STR_PS -> targetType == STR_P || targetType==STR_PS || targetType == UWORD
+                ARRAY_UB -> targetType == UWORD
+                ARRAY_B -> targetType == UWORD
+                ARRAY_UW -> targetType == UWORD
+                ARRAY_W -> targetType == UWORD
+                ARRAY_F -> targetType == UWORD
             }
 }