diff --git a/libavformat/nutdec.c b/libavformat/nutdec.c
index 7ae722b74c..f8c3fecfb8 100644
--- a/libavformat/nutdec.c
+++ b/libavformat/nutdec.c
@@ -506,7 +506,7 @@ static int decode_info_header(NUTContext *nut)
                                                     nut->time_base_count],
                                      start, start + chapter_len, NULL);
         if (!chapter) {
-            av_log(s, AV_LOG_ERROR, "could not create chapter\n");
+            av_log(s, AV_LOG_ERROR, "Could not create chapter.\n");
             return AVERROR(ENOMEM);
         }
         metadata = &chapter->metadata;