diff --git a/libavcodec/h261dec.c b/libavcodec/h261dec.c
index dea554b71c..5bc685e2c0 100644
--- a/libavcodec/h261dec.c
+++ b/libavcodec/h261dec.c
@@ -609,11 +609,10 @@ retry:
         s->parse_context = pc;
     }
 
-    if (!s->context_initialized)
+    if (!s->context_initialized) {
         if ((ret = ff_MPV_common_init(s)) < 0)
             return ret;
 
-    if (!s->context_initialized) {
         ret = ff_set_dimensions(avctx, s->width, s->height);
         if (ret < 0)
             return ret;