diff --git a/start_portaudio.c b/start_portaudio.c
index 1e83c55f0..d1f439746 100644
--- a/start_portaudio.c
+++ b/start_portaudio.c
@@ -20,11 +20,11 @@ int start_threads_(int *ndevin, int *ndevout, short y1[], short y2[],
   int iret1,iret2,iret3;
   int iarg1=1, iarg2=2, iarg3=3;
 
- /* snd_pcm_start */
-  //  printf("start_threads: creating thread for a2d\n");
-  iret1 = pthread_create(&thread1,NULL,a2d_,&iarg1);
-  //  printf("start_threads: creating thread for decode1_\n");
-  iret2 = pthread_create(&thread2,NULL,decode1_,&iarg2);
-  //  printf("start_threads: creating thread for recvpkt_\n");
-  iret3 = pthread_create(&thread3,NULL,recvpkt_,&iarg3);
+  iret1 = pthread_create(&thread1,NULL,
+			 (void *)a2d_,&iarg1);
+  iret2 = pthread_create(&thread2,NULL,
+			 (void *)decode1_,&iarg2);
+  iret3 = pthread_create(&thread3,NULL,
+			 (void *)recvpkt_,&iarg3);
+  return(iret1 | iret2 | iret3);
 }