diff --git a/libsrc/common/getcpu.s b/libsrc/common/getcpu.s
index 7fe002f65..169c56bbd 100644
--- a/libsrc/common/getcpu.s
+++ b/libsrc/common/getcpu.s
@@ -52,8 +52,8 @@ _getcpu:
         clc
         adc     #1              ; $01+$09 = $10 on 6502, $01+$09 = $0A on 2a03/2a07
         cld
-        cmp     #10
-        bne     @L5
+        cmp     #$0a
+        beq     @L5
         lda     #0              ; CPU_6502 constant
         beq     @L9
 @L5: