diff --git a/clang/include/clang/Basic/DiagnosticGroups.td b/clang/include/clang/Basic/DiagnosticGroups.td
index 45e34df4d58d..aa1773481dcb 100644
--- a/clang/include/clang/Basic/DiagnosticGroups.td
+++ b/clang/include/clang/Basic/DiagnosticGroups.td
@@ -632,7 +632,9 @@ def UnusedGetterReturnValue : DiagGroup<"unused-getter-return-value">;
 def UsedButMarkedUnused : DiagGroup<"used-but-marked-unused">;
 def UserDefinedLiterals : DiagGroup<"user-defined-literals">;
 def UserDefinedWarnings : DiagGroup<"user-defined-warnings">;
-def Reorder : DiagGroup<"reorder">;
+def ReorderCtor : DiagGroup<"reorder-ctor">;
+def ReorderInitList : DiagGroup<"reorder-init-list">;
+def Reorder : DiagGroup<"reorder", [ReorderCtor, ReorderInitList]>;
 def UndeclaredSelector : DiagGroup<"undeclared-selector">;
 def ImplicitAtomic : DiagGroup<"implicit-atomic-properties">;
 def CustomAtomic : DiagGroup<"custom-atomic-properties">;
diff --git a/clang/include/clang/Basic/DiagnosticSemaKinds.td b/clang/include/clang/Basic/DiagnosticSemaKinds.td
index 93be2cd476a9..80f9439c2037 100644
--- a/clang/include/clang/Basic/DiagnosticSemaKinds.td
+++ b/clang/include/clang/Basic/DiagnosticSemaKinds.td
@@ -208,7 +208,7 @@ def ext_designated_init_nested : ExtWarn<
   "nested designators are a C99 extension">, InGroup<C99Designator>;
 def ext_designated_init_reordered : ExtWarn<
   "ISO C++ requires field designators to be specified in declaration order; "
-  "field %1 will be initialized after field %0">, InGroup<Reorder>,
+  "field %1 will be initialized after field %0">, InGroup<ReorderInitList>,
   SFINAEFailure;
 def note_previous_field_init : Note<
   "previous initialization for field %0 is here">;
@@ -7644,7 +7644,7 @@ def err_mem_init_not_member_or_class : Error<
 def warn_initializer_out_of_order : Warning<
   "%select{field|base class}0 %1 will be initialized after "
   "%select{field|base}2 %3">,
-  InGroup<Reorder>, DefaultIgnore;
+  InGroup<ReorderCtor>, DefaultIgnore;
 def warn_abstract_vbase_init_ignored : Warning<
   "initializer for virtual base class %0 of abstract class %1 "
   "will never be used">,
diff --git a/clang/test/SemaCXX/cxx2a-initializer-aggregates.cpp b/clang/test/SemaCXX/cxx2a-initializer-aggregates.cpp
index a974f3d72662..c24c53e562d8 100644
--- a/clang/test/SemaCXX/cxx2a-initializer-aggregates.cpp
+++ b/clang/test/SemaCXX/cxx2a-initializer-aggregates.cpp
@@ -1,8 +1,8 @@
 // RUN: %clang_cc1 -std=c++2a %s -verify=expected,pedantic,override,reorder -pedantic-errors
-// RUN: %clang_cc1 -std=c++2a %s -verify=expected,pedantic -Werror=c99-designator -Wno-reorder -Wno-initializer-overrides
-// RUN: %clang_cc1 -std=c++2a %s -verify=expected,reorder -Wno-c99-designator -Werror=reorder -Wno-initializer-overrides
-// RUN: %clang_cc1 -std=c++2a %s -verify=expected,override -Wno-c99-designator -Wno-reorder -Werror=initializer-overrides
-// RUN: %clang_cc1 -std=c++2a %s -verify -Wno-c99-designator -Wno-reorder -Wno-initializer-overrides
+// RUN: %clang_cc1 -std=c++2a %s -verify=expected,pedantic -Werror=c99-designator -Wno-reorder-init-list -Wno-initializer-overrides
+// RUN: %clang_cc1 -std=c++2a %s -verify=expected,reorder -Wno-c99-designator -Werror=reorder-init-list -Wno-initializer-overrides
+// RUN: %clang_cc1 -std=c++2a %s -verify=expected,override -Wno-c99-designator -Wno-reorder-init-list -Werror=initializer-overrides
+// RUN: %clang_cc1 -std=c++2a %s -verify -Wno-c99-designator -Wno-reorder-init-list -Wno-initializer-overrides
 
 
 namespace class_with_ctor {