diff --git a/libavformat/srtp.c b/libavformat/srtp.c
index de48c1461a..ebc5c98fd7 100644
--- a/libavformat/srtp.c
+++ b/libavformat/srtp.c
@@ -121,8 +121,8 @@ int ff_srtp_decrypt(struct SRTPContext *s, uint8_t *buf, int *lenptr)
 {
     uint8_t iv[16] = { 0 }, hmac[20];
     int len = *lenptr;
-    int ext, seq_largest;
-    uint32_t ssrc, roc;
+    int ext, av_uninit(seq_largest);
+    uint32_t ssrc, av_uninit(roc);
     uint64_t index;
     int rtcp;