diff --git a/pagure/flask_app.py b/pagure/flask_app.py
index 646b083..ca39fa8 100644
--- a/pagure/flask_app.py
+++ b/pagure/flask_app.py
@@ -71,6 +71,11 @@ def create_app(config=None):
 
     pagure.utils.set_up_logging(app=app)
 
+    @app.errorhandler(500)
+    def fatal_error(error):  # pragma: no cover
+        """500 Fatal Error page"""
+        return flask.render_template("fatal_error.html", error=error), 500
+
     app.jinja_env.trim_blocks = True
     app.jinja_env.lstrip_blocks = True
 
diff --git a/pagure/ui/__init__.py b/pagure/ui/__init__.py
index 8288099..1b791f6 100644
--- a/pagure/ui/__init__.py
+++ b/pagure/ui/__init__.py
@@ -35,12 +35,6 @@ def not_found(error):
     return flask.render_template("not_found.html", error=error), 404
 
 
-@UI_NS.errorhandler(500)
-def fatal_error(error):  # pragma: no cover
-    """500 Fatal Error page"""
-    return flask.render_template("fatal_error.html", error=error), 500
-
-
 @UI_NS.errorhandler(401)
 def unauthorized(error):  # pragma: no cover
     """401 Unauthorized page"""