diff --git a/Tests/RunCMake/RunCMake.cmake b/Tests/RunCMake/RunCMake.cmake
index baeb9cafa1..8939cb7778 100644
--- a/Tests/RunCMake/RunCMake.cmake
+++ b/Tests/RunCMake/RunCMake.cmake
@@ -24,6 +24,8 @@ function(run_cmake test)
   if(EXISTS ${top_src}/${test}-result.txt)
     file(READ ${top_src}/${test}-result.txt expect_result)
     string(REGEX REPLACE "\n+$" "" expect_result "${expect_result}")
+  elseif(DEFINED RunCMake_TEST_EXPECT_RESULT)
+    set(expect_result "${RunCMake_TEST_EXPECT_RESULT}")
   else()
     set(expect_result 0)
   endif()