diff --git a/libavfilter/avfiltergraph.c b/libavfilter/avfiltergraph.c
index 0a0108eb0c..8182c85f0f 100644
--- a/libavfilter/avfiltergraph.c
+++ b/libavfilter/avfiltergraph.c
@@ -446,7 +446,7 @@ static AVFilterContext *create_filter_with_args(const char *filt, void *opaque)
     av_log(NULL, AV_LOG_INFO, "creating filter \"%s\" with args \"%s\"\n",
            name, args ? args : "(none)");
 
-    if(ret = avfilter_open(avfilter_get_by_name(name), NULL)) {
+    if((ret = avfilter_open(avfilter_get_by_name(name), NULL))) {
         if(avfilter_init_filter(ret, args, opaque)) {
             av_log(NULL, AV_LOG_ERROR, "error initializing filter!\n");
             avfilter_destroy(ret);