diff --git a/libsrc/atari/cashdr.s b/libsrc/atari/cashdr.s
index 99aefe68f..d4824f816 100644
--- a/libsrc/atari/cashdr.s
+++ b/libsrc/atari/cashdr.s
@@ -31,6 +31,8 @@ _cas_hdr:
         ldy     #80
         sta     (SAVMSC),y
 .endif
+        lda     #$3c
+        sta     PACTL
         clc
         rts