diff --git a/alienfx/core/themefile.py b/alienfx/core/themefile.py
index 8b8b940..f34b7e8 100644
--- a/alienfx/core/themefile.py
+++ b/alienfx/core/themefile.py
@@ -76,7 +76,7 @@ def __init__(self, controller):
                 self._theme_dir = os.path.expanduser("~/.config/alienfx")
             else:
                 self._theme_dir = os.path.join(
-                    os.environ("XDG_CONFIG_HOME"), "alienfx")
+                    os.environ["XDG_CONFIG_HOME"], "alienfx")
             if not os.path.exists(self._theme_dir):
                 os.makedirs(self._theme_dir)
         except Exception as exc: