diff --git a/apps/buffering.c b/apps/buffering.c
index abf1e4b821..d3f2ed27d8 100644
--- a/apps/buffering.c
+++ b/apps/buffering.c
@@ -19,6 +19,7 @@
  *
  ****************************************************************************/
 #include "config.h"
+#include <string.h>
 #include "system.h"
 #include "storage.h"
 #include "thread.h"