diff --git a/contrib/platform/win32/CMakeModules/ompi_configure.cmake b/contrib/platform/win32/CMakeModules/ompi_configure.cmake
index d263ece9b3..eb2495937e 100644
--- a/contrib/platform/win32/CMakeModules/ompi_configure.cmake
+++ b/contrib/platform/win32/CMakeModules/ompi_configure.cmake
@@ -134,6 +134,8 @@ SET(OMPI_F90_ABSOLUTE "\"none\"")
 
 SET(OMPI_F90_BUILD_SIZE "\"small\"")
 
+SET(OMPI_BTL_SM_HAVE_KNEM 0)
+
 # set the im/export decleration here. 
 # Don't bother with OMPI_IMPORTS
 IF(BUILD_SHARED_LIBS)
diff --git a/contrib/platform/win32/ConfigFiles/opal_config.h.cmake b/contrib/platform/win32/ConfigFiles/opal_config.h.cmake
index df2eb37b9b..72cd572a49 100644
--- a/contrib/platform/win32/ConfigFiles/opal_config.h.cmake
+++ b/contrib/platform/win32/ConfigFiles/opal_config.h.cmake
@@ -65,6 +65,8 @@
 
 #define OPAL_BUILD_PLATFORM_COMPILER_VERSION_STR ${COMPILER_VERSION}
 
+#define OMPI_BTL_SM_HAVE_KNEM ${OMPI_BTL_SM_HAVE_KNEM}
+
 /* Maximum length of datarep strings (default is 128) */
 #define OPAL_MAX_DATAREP_STRING ${OPAL_MAX_DATAREP_STRING}