diff --git a/Tests/CMakeLists.txt b/Tests/CMakeLists.txt
index 699b61669..d568a6418 100644
--- a/Tests/CMakeLists.txt
+++ b/Tests/CMakeLists.txt
@@ -2680,6 +2680,7 @@ ${CMake_BINARY_DIR}/bin/cmake -DDIR=dev -P ${CMake_SOURCE_DIR}/Utilities/Release
 
   ADD_TEST_MACRO(CTestTestSerialOrder ${CMAKE_CTEST_COMMAND}
     --output-on-failure -C "\${CTestTest_CONFIG}")
+  set_property(TEST CTestTestSerialOrder PROPERTY ENVIRONMENT CTEST_PARALLEL_LEVEL=)
 
   if(NOT BORLAND)
     set(CTestLimitDashJ_CTEST_OPTIONS --force-new-ctest-process)