diff --git a/clang/lib/Sema/SemaTemplate.cpp b/clang/lib/Sema/SemaTemplate.cpp
index 9bfa71dc8bcf1..a5d2afdf4a0ba 100644
--- a/clang/lib/Sema/SemaTemplate.cpp
+++ b/clang/lib/Sema/SemaTemplate.cpp
@@ -2588,7 +2588,7 @@ struct ConvertConstructorToDeductionGuideTransform {
       // placeholder to indicate there is a default argument.
       QualType ParamTy = NewDI->getType();
       NewDefArg = new (SemaRef.Context)
-          OpaqueValueExpr(OldParam->getDefaultArg()->getBeginLoc(),
+          OpaqueValueExpr(OldParam->getDefaultArgRange().getBegin(),
                           ParamTy.getNonLValueExprType(SemaRef.Context),
                           ParamTy->isLValueReferenceType()   ? VK_LValue
                           : ParamTy->isRValueReferenceType() ? VK_XValue