diff --git a/libavcodec/h261dec.c b/libavcodec/h261dec.c
index 2b3408d7b3..5c25aa9cb3 100644
--- a/libavcodec/h261dec.c
+++ b/libavcodec/h261dec.c
@@ -608,10 +608,7 @@ retry:
     }
 
     if (s->width != avctx->coded_width || s->height != avctx->coded_height) {
-        ParseContext pc = s->parse_context; // FIXME move this demuxing hack to libavformat
-        s->parse_context.buffer = 0;
         ff_mpv_common_end(s);
-        s->parse_context = pc;
     }
 
     if (!s->context_initialized) {