diff --git a/lib/Sema/SemaInit.cpp b/lib/Sema/SemaInit.cpp
index f36d3a5..031fe27 100644
--- a/lib/Sema/SemaInit.cpp
+++ b/lib/Sema/SemaInit.cpp
@@ -41,7 +41,7 @@
 
 int InitListChecker::numStructUnionElements(QualType DeclType) {
   RecordDecl *structDecl = DeclType->getAsRecordType()->getDecl();
-  int InitializableMembers 
+  const int InitializableMembers 
     = std::count_if(structDecl->field_begin(), structDecl->field_end(),
                     std::mem_fun(&FieldDecl::getDeclName));
   if (structDecl->isUnion())