diff --git a/src/inc/sndseq.plh b/src/inc/sndseq.plh
index dbde81a..b20a464 100644
--- a/src/inc/sndseq.plh
+++ b/src/inc/sndseq.plh
@@ -1,5 +1,6 @@
 import sndseq
     word musicSequence // musicSequence(yield, backgroundProc)#0
-    predef spkrTone(pitch, duration)#0, spkrPWM(sample, speed, len)#0
+    word spkrTone      // spkrTone(pitch, duration)#0
+    word spkrPWM       // spkrPWM(sample, speed, len)#0
     predef musicPlay(track, rept)#0, musicStop#0, musicGetKey(yield, backgroundProc)#1
 end