diff --git a/config/cmake_ext_mod/HDFMacros.cmake b/config/cmake_ext_mod/HDFMacros.cmake
index b3d97ce3ef1..2f4ce520c0b 100644
--- a/config/cmake_ext_mod/HDFMacros.cmake
+++ b/config/cmake_ext_mod/HDFMacros.cmake
@@ -14,7 +14,7 @@
 macro (SET_HDF_BUILD_TYPE)
   get_property(_isMultiConfig GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
   if(_isMultiConfig)
-    set(HDF_CFG_NAME \${CTEST_CONFIGURATION_TYPE})
+    set(HDF_CFG_NAME ${CMAKE_BUILD_TYPE})
     set(HDF_BUILD_TYPE ${CMAKE_CFG_INTDIR})
     set(HDF_CFG_BUILD_TYPE \${CMAKE_INSTALL_CONFIG_NAME})
   else()