diff --git a/libsrc/gamate/joy/gamate-stdjoy.s b/libsrc/gamate/joy/gamate-stdjoy.s
index f6b303dba..a5bd24ef2 100644
--- a/libsrc/gamate/joy/gamate-stdjoy.s
+++ b/libsrc/gamate/joy/gamate-stdjoy.s
@@ -79,7 +79,7 @@ COUNT:
 
 READJOY:
         lda     JOY_DATA
-	eor     #$ff
+        eor     #$ff
         ldx     #0
         rts