diff --git a/libsrc/atari7800/textcolor.s b/libsrc/atari7800/textcolor.s
index 6ccbcf491..be98ed340 100644
--- a/libsrc/atari7800/textcolor.s
+++ b/libsrc/atari7800/textcolor.s
@@ -39,6 +39,7 @@ txtcolor:
 @L1:    lda     #42
 @L2:    ldy     txtcolor
         sta     txtcolor        ; Store new textcolor
+        ldx     #0
         tya
         bne     @L3
         rts                     ; Old colour was 0