diff --git a/stratosphere/ams_mitm/source/fs_mitm/fs_shim.c b/stratosphere/ams_mitm/source/fs_mitm/fs_shim.c
index 2efaddca2..7e4f21753 100644
--- a/stratosphere/ams_mitm/source/fs_mitm/fs_shim.c
+++ b/stratosphere/ams_mitm/source/fs_mitm/fs_shim.c
@@ -15,6 +15,7 @@
  */
  
 #include <switch.h>
+#include <string.h>
 #include "fs_shim.h"
 
 /* Missing fsp-srv commands. */