diff --git a/clang/lib/Sema/SemaOverload.cpp b/clang/lib/Sema/SemaOverload.cpp
index 64cd52c..4b58988 100644
--- a/clang/lib/Sema/SemaOverload.cpp
+++ b/clang/lib/Sema/SemaOverload.cpp
@@ -7707,6 +7707,8 @@
     ArithmeticTypes.push_back(S.Context.BoolTy);
     ArithmeticTypes.push_back(S.Context.CharTy);
     ArithmeticTypes.push_back(S.Context.WCharTy);
+    if (S.Context.getLangOpts().Char8)
+      ArithmeticTypes.push_back(S.Context.Char8Ty);
     ArithmeticTypes.push_back(S.Context.Char16Ty);
     ArithmeticTypes.push_back(S.Context.Char32Ty);
     ArithmeticTypes.push_back(S.Context.SignedCharTy);