diff --git a/RTLabelProject/Classes/RTLabel.m b/RTLabelProject/Classes/RTLabel.m
index 4cf8624..42273d4 100755
--- a/RTLabelProject/Classes/RTLabel.m
+++ b/RTLabelProject/Classes/RTLabel.m
@@ -329,7 +329,9 @@ - (void)render
 	
 	CFRange range;
 	CGSize constraint = CGSizeMake(self.frame.size.width, CGFLOAT_MAX);
-	self.optimumSize = CTFramesetterSuggestFrameSizeWithConstraints(framesetter, CFRangeMake(0, [self.plainText length]), nil, constraint, &range);
+	//self.optimumSize = CTFramesetterSuggestFrameSizeWithConstraints(framesetter, CFRangeMake(0, [self.plainText length]), nil, constraint, &range);
+    CGSize optimumSize = CTFramesetterSuggestFrameSizeWithConstraints(framesetter, CFRangeMake(0, [self.plainText length]), nil, constraint, &range);
+    self.optimumSize = CGSizeMake(ceilf(optimumSize.width), ceilf(optimumSize.height));
 	
 	
 	if (self.currentSelectedButtonComponentIndex==-1)