diff --git a/drivers/audio/cxd56.c b/drivers/audio/cxd56.c
index 259e7aee39a..ea5d5582a1a 100644
--- a/drivers/audio/cxd56.c
+++ b/drivers/audio/cxd56.c
@@ -41,6 +41,7 @@
 #include <math.h>
 #include <queue.h>
 #include <string.h>
+#include <inttypes.h>
 
 #include <nuttx/arch.h>
 #include <nuttx/config.h>
@@ -3475,7 +3476,8 @@ static int cxd56_init_worker(FAR struct audio_lowerhalf_s *dev)
   void *value;
   int ret;
 
-  snprintf(priv->mqname, sizeof(priv->mqname), "/tmp/%X", priv);
+  snprintf(priv->mqname, sizeof(priv->mqname), "/tmp/%" PRIXPTR,
+           (uintptr_t)priv);
 
   m_attr.mq_maxmsg  = 16;
   m_attr.mq_msgsize = sizeof(struct audio_msg_s);