diff --git a/libavformat/avidec.c b/libavformat/avidec.c
index f5b5c21a35..84ccaec5e3 100644
--- a/libavformat/avidec.c
+++ b/libavformat/avidec.c
@@ -1295,12 +1295,12 @@ static int avi_read_close(AVFormatContext *s)
         AVIStream *ast = st->priv_data;
         av_free(st->codec->palctrl);
         if (ast) {
-        if (ast->sub_ctx) {
-            av_freep(&ast->sub_ctx->pb);
-            av_close_input_stream(ast->sub_ctx);
-        }
-        av_free(ast->sub_buffer);
-        av_free_packet(&ast->sub_pkt);
+            if (ast->sub_ctx) {
+                av_freep(&ast->sub_ctx->pb);
+                av_close_input_stream(ast->sub_ctx);
+            }
+            av_free(ast->sub_buffer);
+            av_free_packet(&ast->sub_pkt);
         }
     }