diff --git a/libmpcodecs/native/fli.c b/libmpcodecs/native/fli.c
index b8e906bc36..0a49e09f8c 100644
--- a/libmpcodecs/native/fli.c
+++ b/libmpcodecs/native/fli.c
@@ -14,6 +14,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include "config.h"
 #include "bswap.h"
 #include "mp_msg.h"
diff --git a/libmpcodecs/native/nuppelvideo.c b/libmpcodecs/native/nuppelvideo.c
index 061caa38d7..6ddc59fb2a 100644
--- a/libmpcodecs/native/nuppelvideo.c
+++ b/libmpcodecs/native/nuppelvideo.c
@@ -9,6 +9,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
+#include <strings.h>
 
 #include "config.h"
 #include "mp_msg.h"
diff --git a/libmpcodecs/native/roqav.c b/libmpcodecs/native/roqav.c
index dfc41a92cb..de80babcff 100644
--- a/libmpcodecs/native/roqav.c
+++ b/libmpcodecs/native/roqav.c
@@ -8,6 +8,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include "config.h"
 #include "bswap.h"
 #include "mp_msg.h"