diff --git a/lib/Sema/Sema.h b/lib/Sema/Sema.h
index 0b42e8d..c997630 100644
--- a/lib/Sema/Sema.h
+++ b/lib/Sema/Sema.h
@@ -2771,6 +2771,7 @@
                                           const CXXScopeSpec &SS,
                                           TemplateParameterList **ParamLists,
                                           unsigned NumParamLists,
+                                          bool IsFriend,
                                           bool &IsExplicitSpecialization);
 
   DeclResult CheckClassTemplate(Scope *S, unsigned TagSpec, TagUseKind TUK,