diff --git a/clang/test/AST/Interp/cxx23.cpp b/clang/test/AST/Interp/cxx23.cpp
index d0991f3ffdff5e..b36299c3f8aeea 100644
--- a/clang/test/AST/Interp/cxx23.cpp
+++ b/clang/test/AST/Interp/cxx23.cpp
@@ -212,3 +212,14 @@ namespace VoidCast {
   static_assert(q == nullptr); // ref-error {{not an integral constant expression}} \
                                // ref-note {{initializer of 'q' is not a constant expression}}
 }
+
+namespace ExplicitLambdaInstancePointer {
+  struct C {
+      constexpr C(auto) { }
+  };
+  void foo() {
+      constexpr auto b = [](this C) { return 1; }; // all20-error {{explicit object parameters are incompatible with C++ standards before C++2b}}
+      constexpr int (*fp)(C) = b;
+      static_assert(fp(1) == 1, "");
+  }
+}
diff --git a/clang/test/AST/Interp/lambda.cpp b/clang/test/AST/Interp/lambda.cpp
index c4fce283ec45a5..0eb12643b1b7f4 100644
--- a/clang/test/AST/Interp/lambda.cpp
+++ b/clang/test/AST/Interp/lambda.cpp
@@ -280,14 +280,3 @@ namespace InvalidCapture {
     } ();
   }
 }
-
-namespace ExplicitInstancePointer {
-  struct C {
-      constexpr C(auto) { }
-  };
-  void foo() {
-      constexpr auto b = [](this C) { return 1; };
-      constexpr int (*fp)(C) = b;
-      static_assert(fp(1) == 1, "");
-  }
-}