diff --git a/clang/include/clang/Sema/Sema.h b/clang/include/clang/Sema/Sema.h
--- a/clang/include/clang/Sema/Sema.h
+++ b/clang/include/clang/Sema/Sema.h
@@ -7171,8 +7171,7 @@
       IdentifierInfo *Id, unsigned InitStyle, Expr *Init, DeclContext *DeclCtx);
 
   /// Add an init-capture to a lambda scope.
-  void addInitCapture(sema::LambdaScopeInfo *LSI, VarDecl *Var,
-                      bool isReferenceType);
+  void addInitCapture(sema::LambdaScopeInfo *LSI, VarDecl *Var, bool ByRef);
 
   /// Note that we have finished the explicit captures for the
   /// given lambda.
diff --git a/clang/lib/Sema/SemaLambda.cpp b/clang/lib/Sema/SemaLambda.cpp
--- a/clang/lib/Sema/SemaLambda.cpp
+++ b/clang/lib/Sema/SemaLambda.cpp
@@ -798,12 +798,11 @@
   return NewVD;
 }
 
-void Sema::addInitCapture(LambdaScopeInfo *LSI, VarDecl *Var,
-                          bool isReferenceType) {
+void Sema::addInitCapture(LambdaScopeInfo *LSI, VarDecl *Var, bool ByRef) {
   assert(Var->isInitCapture() && "init capture flag should be set");
-  LSI->addCapture(Var, /*isBlock*/ false, isReferenceType,
-                  /*isNested*/ false, Var->getLocation(), SourceLocation(),
-                  Var->getType(), /*Invalid*/ false);
+  LSI->addCapture(Var, /*isBlock=*/ false, ByRef,
+                  /*isNested=*/ false, Var->getLocation(), SourceLocation(),
+                  Var->getType(), /*Invalid=*/ false);
 }
 
 // Unlike getCurLambda, getCurrentLambdaScopeUnsafe doesn't