diff --git a/setup.py b/setup.py
index dca81c0..6086a36 100644
--- a/setup.py
+++ b/setup.py
@@ -169,7 +169,7 @@ class BuildCMakeExt(build_ext):
         # Below is just an example set of arguments for building Blender as a Python module
 
         self.spawn(['cmake', '-H'+SOURCE_DIR, '-B'+self.build_temp,
-                    '-DCMAKE_C_COMPILER=' + os.env["CC"], "-DCMAKE_CXX_COMPILER=" + os.env["CXX"],
+                    '-DCMAKE_C_COMPILER=' + os.environ["CC"], "-DCMAKE_CXX_COMPILER=" + os.environ["CXX"],
                     '-DENABLE_OPENMP=ON','-DINTERNAL_BOOST=ON','-DINTERNAL_EIGEN=ON',
                     '-DINTERNAL_HDF5=ON','-DINTERNAL_NETCDF=ON',
                     '-DBUILD_PYTHON=ON', '-DINSTALL_PYTHON_LOCAL=OFF',