diff --git a/cocos/2d/CCLabel.cpp b/cocos/2d/CCLabel.cpp
index 24157cee78..7d32e4e9e9 100644
--- a/cocos/2d/CCLabel.cpp
+++ b/cocos/2d/CCLabel.cpp
@@ -1945,6 +1945,9 @@ void Label::updateDisplayedOpacity(GLubyte parentOpacity)
     }
 }
 
+// FIXME: it is not clear what is the difference between setTextColor() and setColor()
+// if setTextColor() only changes the text and nothing but the text (no glow, no outline, not underline)
+// that's fine but it should be documented
 void Label::setTextColor(const Color4B &color)
 {
     CCASSERT(_currentLabelType == LabelType::TTF || _currentLabelType == LabelType::STRING_TEXTURE, "Only supported system font and ttf!");
diff --git a/tests/cpp-tests/Classes/LabelTest/LabelTestNew.cpp b/tests/cpp-tests/Classes/LabelTest/LabelTestNew.cpp
index 33241adbe4..d35869341d 100644
--- a/tests/cpp-tests/Classes/LabelTest/LabelTestNew.cpp
+++ b/tests/cpp-tests/Classes/LabelTest/LabelTestNew.cpp
@@ -3197,7 +3197,7 @@ std::string LabelIssue15214::title() const
 
 std::string LabelIssue15214::subtitle() const
 {
-    return "Font and underline should be of the same color";
+    return "Font + underline: same color with setColor()";
 }
 
 //