diff --git a/sql/plsql/Cpp/st.CMakeLists.txt b/sql/plsql/Cpp/st.CMakeLists.txt
index 84070b9cfb..40a506d56c 100644
--- a/sql/plsql/Cpp/st.CMakeLists.txt
+++ b/sql/plsql/Cpp/st.CMakeLists.txt
@@ -9,7 +9,7 @@ set(THREADS_PREFER_PTHREAD_FLAG ON)
 find_package(Threads REQUIRED)
 #SET(GCC_COVERAGE_COMPILE_FLAGS "-g -pg")
 #SET(GCC_COVERAGE_LINK_FLAGS    "-g -pg")
-<if(os_win)>
+<if(test.IsWindows)>
 SET(CMAKE_CXX_FLAGS  "${CMAKE_CXX_FLAGS} /MT /bigobj")
 <else>
 #SET(CMAKE_CXX_FLAGS  "${CMAKE_CXX_FLAGS} ${GCC_COVERAGE_COMPILE_FLAGS}")