diff --git a/platform/mbed_error.c b/platform/mbed_error.c
index 935290e8c4..57f231cc3e 100644
--- a/platform/mbed_error.c
+++ b/platform/mbed_error.c
@@ -15,6 +15,7 @@
  */
 #include <stdlib.h>
 #include <stdarg.h>
+#include <string.h>
 #include "device.h"
 #include "platform/mbed_critical.h"
 #include "platform/mbed_error.h"