diff --git a/src/mathed/InsetMathGrid.cpp b/src/mathed/InsetMathGrid.cpp
index 594b1c264b..0d6918d1bb 100644
--- a/src/mathed/InsetMathGrid.cpp
+++ b/src/mathed/InsetMathGrid.cpp
@@ -1039,7 +1039,7 @@ void InsetMathGrid::doDispatch(Cursor & cur, FuncRequest & cmd)
 		break;
 
 	case LFUN_INSET_DIALOG_UPDATE:
-//		GridInsetMailer(*this).updateDialog(&cur.bv());
+		GridInsetMailer(*this).updateDialog(&cur.bv());
 		break;
 
 	// insert file functions