diff --git a/libsrc/atari/sound.s b/libsrc/atari/sound.s
index 880af3ee7..0fc1dad07 100644
--- a/libsrc/atari/sound.s
+++ b/libsrc/atari/sound.s
@@ -16,7 +16,7 @@
         pha             ;save in stack
         jsr popa        ;get voice
         asl a           ;adjust voice *2 for offset in x
-        tax 
+        tax
         pla             ;get pitch from stack
         sta AUDF1,x     ;store pitch
         lda #0