diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3d139ed..b7ea2d3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -132,6 +132,9 @@ else( )
       set( GMOCK_ROOT "$ENV{GMOCK_ROOT}" )
     endif( )
     list( APPEND clSPARSE.Cmake.Args -DGTEST_ROOT=${GMOCK_ROOT} )
+    if( DEFINED GTEST_INCLUDE_DIR )
+      list( APPEND clSPARSE.Cmake.Args -DGTEST_INCLUDE_DIR=${GTEST_INCLUDE_DIR} )
+    endif( )
   endif( )
 endif( )