diff --git a/src/main/java/dk/camelot64/kickc/passes/Pass0GenerateStatementSequence.java b/src/main/java/dk/camelot64/kickc/passes/Pass0GenerateStatementSequence.java
index 96352c566..7ae4f04bd 100644
--- a/src/main/java/dk/camelot64/kickc/passes/Pass0GenerateStatementSequence.java
+++ b/src/main/java/dk/camelot64/kickc/passes/Pass0GenerateStatementSequence.java
@@ -1609,7 +1609,7 @@ public class Pass0GenerateStatementSequence extends KickCParserBaseVisitor<Objec
    public Object visitExprAssignment(KickCParser.ExprAssignmentContext ctx) {
       Object val = visit(ctx.expr(0));
       if(val instanceof ConstantRef) {
-         throw new CompileError("Error! Constants can not be modified " + val.toString(), new StatementSource(ctx));
+         throw new CompileError("const variable may not be modified " + val.toString(), new StatementSource(ctx));
       }
       if(!(val instanceof LValue)) {
          throw new CompileError("Error! Illegal assignment Lvalue " + val.toString(), new StatementSource(ctx));
diff --git a/src/test/java/dk/camelot64/kickc/test/TestPrograms.java b/src/test/java/dk/camelot64/kickc/test/TestPrograms.java
index 82efd2799..87da519b8 100644
--- a/src/test/java/dk/camelot64/kickc/test/TestPrograms.java
+++ b/src/test/java/dk/camelot64/kickc/test/TestPrograms.java
@@ -64,7 +64,7 @@ public class TestPrograms {
 
    @Test
    public void testNomodify0() throws IOException, URISyntaxException {
-      assertError("nomodify-0", "Constants can not be modified");
+      assertError("nomodify-0", "const variable may not be modified");
    }
 
    @Test