diff --git a/libavformat/srtp.c b/libavformat/srtp.c
index 4628da2d48..6659bfc5c9 100644
--- a/libavformat/srtp.c
+++ b/libavformat/srtp.c
@@ -25,6 +25,7 @@
 #include "libavutil/intreadwrite.h"
 #include "libavutil/log.h"
 #include "rtp.h"
+#include "rtpdec.h"
 #include "srtp.h"
 
 void ff_srtp_free(struct SRTPContext *s)