diff --git a/apps/metadata/id3tags.c b/apps/metadata/id3tags.c
index 2f736d7b9b..a32d01589d 100644
--- a/apps/metadata/id3tags.c
+++ b/apps/metadata/id3tags.c
@@ -35,6 +35,7 @@
 #include <stdbool.h>
 #include <stddef.h>
 #include <ctype.h>
+#include "string-extra.h"
 #include "config.h"
 #include "file.h"
 #include "logf.h"
diff --git a/apps/metadata/mp3.c b/apps/metadata/mp3.c
index 15c0a5059b..c65fb39cd8 100644
--- a/apps/metadata/mp3.c
+++ b/apps/metadata/mp3.c
@@ -32,6 +32,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <stdbool.h>
+#include "string-extra.h"
 #include "config.h"
 #include "file.h"
 #include "logf.h"