diff --git a/plugins/PostProcessingPlugin/PostProcessingPlugin.py b/plugins/PostProcessingPlugin/PostProcessingPlugin.py
index f206909f20..3f3ac9f6af 100644
--- a/plugins/PostProcessingPlugin/PostProcessingPlugin.py
+++ b/plugins/PostProcessingPlugin/PostProcessingPlugin.py
@@ -348,7 +348,8 @@ class PostProcessingPlugin(QObject, Extension):
             # No signature needed
             return True
 
-        if os.path.split(file_path)[0] == os.path.join(
+        dir_path = os.path.split(file_path)[0]
+        if dir_path == os.path.join(
                 PluginRegistry.getInstance().getPluginPath("PostProcessingPlugin"),
                 "scripts"):
             # Bundled scripts are trusted.