diff --git a/compiler/src/prog8/compiler/target/c64/codegen/assignment/AugmentableAssignmentAsmGen.kt b/compiler/src/prog8/compiler/target/c64/codegen/assignment/AugmentableAssignmentAsmGen.kt
index c33a5c8d7..0ebbdfe6e 100644
--- a/compiler/src/prog8/compiler/target/c64/codegen/assignment/AugmentableAssignmentAsmGen.kt
+++ b/compiler/src/prog8/compiler/target/c64/codegen/assignment/AugmentableAssignmentAsmGen.kt
@@ -1207,7 +1207,7 @@ internal class AugmentableAssignmentAsmGen(private val program: Program,
                                 sec
                                 sbc  P8ESTACK_LO+1,x
                                 sta  $name
-                                bcc  +
+                                bcs  +
                                 dec  $name+1
 +""")
                         else
diff --git a/examples/test.p8 b/examples/test.p8
index 0fc0b07d1..e4d1c051b 100644
--- a/examples/test.p8
+++ b/examples/test.p8
@@ -17,7 +17,7 @@ main {
         txt.chrout('\n')
 
         uw = 1000
-        uw -= ub+ub2            ; TODO FIX COMPUTATION ERROR
+        uw -= ub+ub2
         txt.print_uw(uw)
         txt.chrout('\n')