diff --git a/cocos/2d/CCFontAtlas.cpp b/cocos/2d/CCFontAtlas.cpp
index 68e36b933d..2511e1d70e 100644
--- a/cocos/2d/CCFontAtlas.cpp
+++ b/cocos/2d/CCFontAtlas.cpp
@@ -321,6 +321,7 @@ bool FontAtlas::prepareLetterDefinitions(const std::u16string& utf16Text)
     int adjustForExtend = _letterEdgeExtend / 2;
     long bitmapWidth;
     long bitmapHeight;
+    int glyphHeight;
     Rect tempRect;
     FontLetterDefinition tempDef;
 
@@ -340,9 +341,10 @@ bool FontAtlas::prepareLetterDefinitions(const std::u16string& utf16Text)
             tempDef.offsetX = tempRect.origin.x + adjustForDistanceMap + adjustForExtend;
             tempDef.offsetY = _fontAscender + tempRect.origin.y - adjustForDistanceMap - adjustForExtend;
 
-            if (bitmapHeight > _currLineHeight)
+            glyphHeight = static_cast<int>(bitmapHeight) + _letterPadding + _letterEdgeExtend;
+            if (glyphHeight > _currLineHeight)
             {
-                _currLineHeight = static_cast<int>(bitmapHeight) + _letterPadding + _letterEdgeExtend + 1;
+                _currLineHeight = glyphHeight;
             }
             if (_currentPageOrigX + tempDef.width > CacheTextureWidth)
             {