diff --git a/src/mathed/MathMacroTemplate.cpp b/src/mathed/MathMacroTemplate.cpp
index d946fcd265..ff296e80b5 100644
--- a/src/mathed/MathMacroTemplate.cpp
+++ b/src/mathed/MathMacroTemplate.cpp
@@ -465,7 +465,7 @@ void MathMacroTemplate::updateToContext(MacroContext const & mc) const
 }
 
 
-void MathMacroTemplate::updateLook(bool editing) const
+void MathMacroTemplate::updateLook() const
 {
 	lookOutdated_ = true;
 }
@@ -609,7 +609,7 @@ void MathMacroTemplate::draw(PainterInfo & pi, int x, int y) const
 
 void MathMacroTemplate::edit(Cursor & cur, bool front, EntryDirection entry_from)
 {
-	updateLook(true);
+	updateLook();
 	cur.updateFlags(Update::SinglePar);
 	InsetMathNest::edit(cur, front, entry_from);
 }
diff --git a/src/mathed/MathMacroTemplate.h b/src/mathed/MathMacroTemplate.h
index ec87fe6042..80a0f9acba 100644
--- a/src/mathed/MathMacroTemplate.h
+++ b/src/mathed/MathMacroTemplate.h
@@ -132,7 +132,7 @@ private:
 	///
 	idx_type displayIdx() const { return optionals_ + 2; }
 	///
-	void updateLook(bool editing = false) const;
+	void updateLook() const;
 	/// look through the macro for #n arguments
 	int maxArgumentInDefinition() const;
 	/// add missing #n arguments up to \c maxArg