Index: src/Common/PassVisitor.impl.h
===================================================================
--- src/Common/PassVisitor.impl.h	(revision f14d956b47dd08a8c9a556c05f84437d6a9ca651)
+++ src/Common/PassVisitor.impl.h	(revision ec776c440431a085fe420ebf4cd0446c5cca7425)
@@ -690,6 +690,6 @@
 	VISIT_START( node );
 
-	maybeAccept_impl( node->condition, *this );
-	maybeAccept_impl( node->message  , *this );
+	node->condition = visitExpression( node->condition );
+	maybeAccept_impl( node->message, *this );
 
 	VISIT_END( node );
@@ -700,6 +700,6 @@
 	MUTATE_START( node );
 
-	maybeMutate_impl( node->condition, *this );
-	maybeMutate_impl( node->message  , *this );
+	node->condition = mutateExpression( node->condition );
+	maybeMutate_impl( node->message, *this );
 
 	MUTATE_END( StaticAssertDecl, node );