diff --git a/libavformat/astenc.c b/libavformat/astenc.c
index 259948b276..250a54b573 100644
--- a/libavformat/astenc.c
+++ b/libavformat/astenc.c
@@ -143,14 +143,16 @@ static int ast_write_trailer(AVFormatContext *s)
 
         /* Loopstart if provided */
         if (ast->loopstart > 0) {
-        if (ast->loopstart >= samples) {
-            av_log(s, AV_LOG_WARNING, "Loopstart value is out of range and will be ignored\n");
-            ast->loopstart = -1;
-            avio_skip(pb, 4);
-        } else
-        avio_wb32(pb, ast->loopstart);
-        } else
+            if (ast->loopstart >= samples) {
+                av_log(s, AV_LOG_WARNING, "Loopstart value is out of range and will be ignored\n");
+                ast->loopstart = -1;
+                avio_skip(pb, 4);
+            } else {
+                avio_wb32(pb, ast->loopstart);
+            }
+        } else {
             avio_skip(pb, 4);
+        }
 
         /* Loopend if provided. Otherwise number of samples again */
         if (ast->loopend && ast->loopstart >= 0) {