diff --git a/libavformat/os_support.c b/libavformat/os_support.c
index 434d4b8693..e6dbc307dd 100644
--- a/libavformat/os_support.c
+++ b/libavformat/os_support.c
@@ -27,6 +27,7 @@
 #include "avformat.h"
 #include <unistd.h>
 #include <fcntl.h>
+#include <sys/time.h>
 #include "os_support.h"
 
 #ifdef CONFIG_NETWORK