diff --git a/libavformat/avio.c b/libavformat/avio.c
index 65075932ae..efde5f30e4 100644
--- a/libavformat/avio.c
+++ b/libavformat/avio.c
@@ -282,6 +282,7 @@ static const struct URLProtocol *url_find_protocol(const char *filename)
             return up;
         }
     }
+    av_freep(&protocols);
 
     return NULL;
 }