diff --git a/libavcodec/acelp_vectors.h b/libavcodec/acelp_vectors.h
index be1ed2c0d6..b7dcf6d176 100644
--- a/libavcodec/acelp_vectors.h
+++ b/libavcodec/acelp_vectors.h
@@ -148,4 +148,4 @@ void ff_acelp_weighted_vector_sum(
         int shift,
         int length);
 
-#endif // FFMPEG_ACELP_VECTORS_H
+#endif /* FFMPEG_ACELP_VECTORS_H */