diff --git a/Tests/RunCMake/install/RunCMakeTest.cmake b/Tests/RunCMake/install/RunCMakeTest.cmake
index 295922c0d3..844c4b93ce 100644
--- a/Tests/RunCMake/install/RunCMakeTest.cmake
+++ b/Tests/RunCMake/install/RunCMakeTest.cmake
@@ -7,7 +7,9 @@ function(run_install_test case)
   set(RunCMake_TEST_NO_CLEAN 1)
   file(REMOVE_RECURSE "${RunCMake_TEST_BINARY_DIR}")
   file(MAKE_DIRECTORY "${RunCMake_TEST_BINARY_DIR}")
+  set(RunCMake_TEST_RAW_ARGS -DCMAKE_BUILD_TYPE:STRING=Debug)
   run_cmake(${case})
+  unset(RunCMake_TEST_RAW_ARGS)
   set(RunCMake_TEST_OUTPUT_MERGE 1)
   run_cmake_command(${case}-build ${CMAKE_COMMAND} --build . --config Debug)
   unset(RunCMake_TEST_OUTPUT_MERGE)