diff --git a/Tests/RunCMake/CXXModules/examples/import-std-transitive/CMakeLists.txt b/Tests/RunCMake/CXXModules/examples/import-std-transitive/CMakeLists.txt
index 2894d676ec..4d1d5df8bf 100644
--- a/Tests/RunCMake/CXXModules/examples/import-std-transitive/CMakeLists.txt
+++ b/Tests/RunCMake/CXXModules/examples/import-std-transitive/CMakeLists.txt
@@ -6,6 +6,7 @@ cmake_minimum_required(VERSION 3.29)
 if (EXPORT_NO_STD)
   # Block making C++ `import std` targets.
   add_library(__CMAKE::CXX23 IMPORTED INTERFACE)
+  add_library(__CMAKE::CXX26 IMPORTED INTERFACE)
 endif ()
 
 project(cxx_modules_import_std_transitive CXX)