Index: uspace/app/wavplay/dplay.c
===================================================================
--- uspace/app/wavplay/dplay.c	(revision 03c971f2e2115454ea0fbcaca3ac08bd88ac0a3c)
+++ uspace/app/wavplay/dplay.c	(revision 8e77b60eb9a6d9795e56ef452732a0eb498ca046)
@@ -43,4 +43,5 @@
 #include <sys/mman.h>
 #include <sys/time.h>
+#include <inttypes.h>
 
 #include <stdio.h>
@@ -104,5 +105,5 @@
 		case PCM_EVENT_PLAYBACK_STARTED:
 		case PCM_EVENT_FRAMES_PLAYED:
-			printf("%u frames: ", IPC_GET_ARG1(call));
+			printf("%" PRIun " frames: ", IPC_GET_ARG1(call));
 			async_answer_0(callid, EOK);
 			break;
@@ -116,5 +117,5 @@
 			return;
 		default:
-			printf("Unknown event %d.\n", IPC_GET_IMETHOD(call));
+			printf("Unknown event %" PRIun ".\n", IPC_GET_IMETHOD(call));
 			async_answer_0(callid, ENOTSUP);
 			continue;
Index: uspace/app/wavplay/drec.c
===================================================================
--- uspace/app/wavplay/drec.c	(revision 03c971f2e2115454ea0fbcaca3ac08bd88ac0a3c)
+++ uspace/app/wavplay/drec.c	(revision 8e77b60eb9a6d9795e56ef452732a0eb498ca046)
@@ -41,4 +41,5 @@
 #include <stdio.h>
 #include <sys/mman.h>
+#include <inttypes.h>
 
 #include "wave.h"
@@ -103,9 +104,9 @@
 			record = false;
 		case PCM_EVENT_FRAMES_CAPTURED:
-			printf("%u frames\n", IPC_GET_ARG1(call));
+			printf("%" PRIun " frames\n", IPC_GET_ARG1(call));
 			async_answer_0(callid, EOK);
 			break;
 		default:
-			printf("Unknown event %d.\n", IPC_GET_IMETHOD(call));
+			printf("Unknown event %" PRIun ".\n", IPC_GET_IMETHOD(call));
 			async_answer_0(callid, ENOTSUP);
 			continue;