diff --git a/clang/include/clang/Sema/Initialization.h b/clang/include/clang/Sema/Initialization.h
--- a/clang/include/clang/Sema/Initialization.h
+++ b/clang/include/clang/Sema/Initialization.h
@@ -804,7 +804,7 @@
     SK_ResolveAddressOfOverloadedFunction,
 
     /// Perform a derived-to-base cast, producing an rvalue.
-    SK_CastDerivedToBaseRValue,
+    SK_CastDerivedToBasePRValue,
 
     /// Perform a derived-to-base cast, producing an xvalue.
     SK_CastDerivedToBaseXValue,
diff --git a/clang/lib/Sema/SemaInit.cpp b/clang/lib/Sema/SemaInit.cpp
--- a/clang/lib/Sema/SemaInit.cpp
+++ b/clang/lib/Sema/SemaInit.cpp
@@ -3457,7 +3457,7 @@
 void InitializationSequence::Step::Destroy() {
   switch (Kind) {
   case SK_ResolveAddressOfOverloadedFunction:
-  case SK_CastDerivedToBaseRValue:
+  case SK_CastDerivedToBasePRValue:
   case SK_CastDerivedToBaseXValue:
   case SK_CastDerivedToBaseLValue:
   case SK_BindReference:
@@ -3585,7 +3585,7 @@
   Step S;
   switch (VK) {
   case VK_PRValue:
-    S.Kind = SK_CastDerivedToBaseRValue;
+    S.Kind = SK_CastDerivedToBasePRValue;
     break;
   case VK_XValue: S.Kind = SK_CastDerivedToBaseXValue; break;
   case VK_LValue: S.Kind = SK_CastDerivedToBaseLValue; break;
@@ -8106,7 +8106,7 @@
   // initializer.
   switch (Steps.front().Kind) {
   case SK_ResolveAddressOfOverloadedFunction:
-  case SK_CastDerivedToBaseRValue:
+  case SK_CastDerivedToBasePRValue:
   case SK_CastDerivedToBaseXValue:
   case SK_CastDerivedToBaseLValue:
   case SK_BindReference:
@@ -8191,7 +8191,7 @@
                                                  Step->Function.Function);
       break;
 
-    case SK_CastDerivedToBaseRValue:
+    case SK_CastDerivedToBasePRValue:
     case SK_CastDerivedToBaseXValue:
     case SK_CastDerivedToBaseLValue: {
       // We have a derived-to-base cast that produces either an rvalue or an
@@ -9617,8 +9617,8 @@
       OS << "resolve address of overloaded function";
       break;
 
-    case SK_CastDerivedToBaseRValue:
-      OS << "derived-to-base (rvalue)";
+    case SK_CastDerivedToBasePRValue:
+      OS << "derived-to-base (prvalue)";
       break;
 
     case SK_CastDerivedToBaseXValue: