diff --git a/drivers/audio/wm8776.c b/drivers/audio/wm8776.c
index dc35179f42a..8794965710c 100644
--- a/drivers/audio/wm8776.c
+++ b/drivers/audio/wm8776.c
@@ -27,6 +27,7 @@
 #include <sys/types.h>
 #include <sys/ioctl.h>
 
+#include <inttypes.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <fcntl.h>
@@ -747,7 +748,8 @@ static int wm8776_start(FAR struct audio_lowerhalf_s *dev)
 
   /* Create a message queue for the worker thread */
 
-  snprintf(priv->mqname, sizeof(priv->mqname), "/tmp/%X", priv);
+  snprintf(priv->mqname, sizeof(priv->mqname), "/tmp/%" PRIXPTR,
+           (uintptr_t)priv);
 
   attr.mq_maxmsg  = 16;
   attr.mq_msgsize = sizeof(struct audio_msg_s);