diff --git a/ffmpeg.c b/ffmpeg.c
index 397c715b238a0518786aae976a6a51671d9b0c20..80a67c180eb9b2cbedd90728db21d85532021dfd 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -444,7 +444,7 @@ static int configure_video_filters(AVInputStream *ist, AVOutputStream *ost)
 
 static void term_exit(void)
 {
-    av_log(NULL, AV_LOG_QUIET, "");
+    av_log(NULL, AV_LOG_QUIET, "%s", "");
 #if HAVE_TERMIOS_H
     if(!run_as_daemon)
         tcsetattr (0, TCSANOW, &oldtty);
diff --git a/ffplay.c b/ffplay.c
index 81bde26ee72c3414f57f40ef70cd01910a3c1569..81b1fcead40b645db74e5f5f4557ab1442a281bf 100644
--- a/ffplay.c
+++ b/ffplay.c
@@ -904,7 +904,7 @@ static void do_exit(void)
     if (show_status)
         printf("\n");
     SDL_Quit();
-    av_log(NULL, AV_LOG_QUIET, "");
+    av_log(NULL, AV_LOG_QUIET, "%s", "");
     exit(0);
 }
 
diff --git a/libavutil/log.h b/libavutil/log.h
index 149225dadf938a7a9af66d8e18f5f0063467a9f0..53c8aa0f67c7824d9cbaa174e03e750c7e296c8b 100644
--- a/libavutil/log.h
+++ b/libavutil/log.h
@@ -159,7 +159,7 @@ const char* av_default_item_name(void* ctx);
  * "Last message repeated x times" messages below (f)printf messages with some
  * bad luck.
  * Also to receive the last, "last repeated" line if any, the user app must
- * call av_log(NULL, AV_LOG_QUIET, ""); at the end
+ * call av_log(NULL, AV_LOG_QUIET, "%s", ""); at the end
  */
 #define AV_LOG_SKIP_REPEATED 1
 void av_log_set_flags(int arg);