diff --git a/easylogger/src/elog.c b/easylogger/src/elog.c
index 4b8fd5a..1bc3b88 100755
--- a/easylogger/src/elog.c
+++ b/easylogger/src/elog.c
@@ -284,6 +284,8 @@ void elog_set_output_enabled(bool enabled) {
  * @param enabled TRUE: enable FALSE:disable
  */
 void elog_set_text_color_enabled(bool enabled) {
+    ELOG_ASSERT((enabled == false) || (enabled == true));
+
     elog.text_color_enabled = enabled;
 }