diff --git a/QRCodeGen.inc b/QRCodeGen.inc
index aa0f106..bab0be8 100644
--- a/QRCodeGen.inc
+++ b/QRCodeGen.inc
@@ -423,14 +423,7 @@ QR_TOTAL    = QR_MAX_DATA + QR_DEGREE ; 44
 ;-----------------------------------------------------------
   MAC _DRAW_FORMAT
 ;-----------------------------------------------------------
-  IF QR_SINGLE_MASK
-   IF QR_VERSION = 3 || QR_VERSION = 4
-; invert 1st pixel of 1st copy (bit 0 not set in formats Q and H)
-    ldy     #0
-    ldx     #QR_SIZE-9
-    jsr     InvertPixel
-   ENDIF
-  ELSE
+  IF QR_SINGLE_MASK = 0
 .idx    = tmpVars
 
     ldy     #QR_FORMATS-1
diff --git a/QRCodeGenDemo.asm b/QRCodeGenDemo.asm
index 0fe23b0..ee9fa27 100644
--- a/QRCodeGenDemo.asm
+++ b/QRCodeGenDemo.asm
@@ -203,6 +203,13 @@ CODE_LST_SIZE = . - qrCodeLst
     sta     qrCodeLst,x
     dex
     bpl     .loopBlack
+
+   IF QR_SINGLE_MASK && (QR_VERSION = 3 || QR_VERSION = 4)
+; invert 1st pixel of 1st copy (bit 0 not set in formats Q and H)
+    ldy     #0
+    ldx     #QR_SIZE-9
+    jsr     InvertPixel
+   ENDIF
   ENDM
 
     include QRCodeGen.inc