diff --git a/gst/gstformat.c b/gst/gstformat.c
index bded68b959..ccc92a6273 100644
--- a/gst/gstformat.c
+++ b/gst/gstformat.c
@@ -20,6 +20,8 @@
  * Boston, MA 02111-1307, USA.
  */
 
+#include <string.h>
+
 #include "gstlog.h"
 
 #include "gstformat.h"