diff --git a/tests/std/tests/P1208R6_source_location/test.cpp b/tests/std/tests/P1208R6_source_location/test.cpp
index 6ed3f67d98b..79497062073 100644
--- a/tests/std/tests/P1208R6_source_location/test.cpp
+++ b/tests/std/tests/P1208R6_source_location/test.cpp
@@ -196,9 +196,8 @@ constexpr void sub_member_test() {
     assert(s_i.x.loc.column() == 5);
 #endif // ^^^ C1XX ^^^
 #if _USE_DETAILED_FUNCTION_NAME_IN_SOURCE_LOCATION
-#ifdef __EDG__ // TRANSITION, EDG is changing to match C1XX's output
-    assert(s_i.x.loc.function_name() == THISCALL_OR_CDECL " s2::s2(int)"sv
-           || s_i.x.loc.function_name() == "s2::s2(int)"sv);
+#ifdef __EDG__ // TRANSITION, EDG is changing to almost match C1XX's output
+    assert(s_i.x.loc.function_name() == "__cdecl s2::s2(int)"sv || s_i.x.loc.function_name() == "s2::s2(int)"sv);
 #else // ^^^ workaround / no workaround vvv
     assert(s_i.x.loc.function_name() == THISCALL_OR_CDECL " s2::s2(int)"sv);
 #endif // ^^^ no workaround ^^^
@@ -245,7 +244,7 @@ constexpr void lambda_test() {
     assert(fun2 == "auto " THISCALL_OR_CDECL " lambda_test()::(anonymous class)::operator()(void) const"sv);
 #elif defined(__EDG__) // ^^^ detailed Clang / detailed __EDG__ vvv
     // TRANSITION, EDG is changing to resemble C1XX's output somewhat more closely
-    assert(fun2 == THISCALL_OR_CDECL " lambda [](void)->auto::operator()(void)->auto"sv
+    assert(fun2 == "__cdecl lambda [](void)->auto::operator()(void)->auto"sv
            || fun2 == "lambda []()->auto::operator()()->auto"sv);
 #else // ^^^ detailed __EDG__ / detailed C1XX vvv
     assert(fun2.starts_with("struct std::source_location " THISCALL_OR_CDECL " lambda_test::<lambda_"sv));