diff --git a/orangecanvas/styles/__init__.py b/orangecanvas/styles/__init__.py
index 9101f990..485dfe49 100644
--- a/orangecanvas/styles/__init__.py
+++ b/orangecanvas/styles/__init__.py
@@ -189,4 +189,4 @@ def process_qss(content: str, base: str):
         return stylesheet_string, []
     else:
         return process_qss(stylesheet_string.decode("utf-8"),
-                           os.path.basename(__file__))
+                           os.path.dirname(__file__))