diff --git a/MathPad/MPExpressionLayout.m b/MathPad/MPExpressionLayout.m
index 0ae3c52..4e83690 100644
--- a/MathPad/MPExpressionLayout.m
+++ b/MathPad/MPExpressionLayout.m
@@ -9,6 +9,7 @@
 #import "MPExpressionLayout.h"
 #import "MPFunctionLayout.h"
 
+#import "NSString+MPExpressionElement.h"
 #import "NSIndexPath+MPAdditions.h"
 
 #define kMPEmptyBoxWidth (self.usesSmallSize ? 2.0 : 3.0)
diff --git a/MathPad/MPLayout.h b/MathPad/MPLayout.h
index 26cb9b6..c053a45 100644
--- a/MathPad/MPLayout.h
+++ b/MathPad/MPLayout.h
@@ -1,5 +1,5 @@
 //
-//  MPDrawable.h
+//  MPLayout.h
 //  MathPad
 //
 //  Created by Kim Wittenburg on 07.08.14.