diff --git a/src/misc/lv_log.c b/src/misc/lv_log.c
index c2b40e87eb..83c80058ee 100644
--- a/src/misc/lv_log.c
+++ b/src/misc/lv_log.c
@@ -95,7 +95,7 @@ void _lv_log_add(lv_log_level_t level, const char * file, int line, const char *
 void lv_log(const char * buf)
 {
 #if LV_LOG_PRINTF
-    printf(buf);
+    printf("%s", buf);
 #endif
     if(custom_print_cb) custom_print_cb(buf);