diff --git a/openpype/hosts/nuke/api/gizmo_menu.py b/openpype/hosts/nuke/api/gizmo_menu.py
index c1132792d0..a541fd3ab1 100644
--- a/openpype/hosts/nuke/api/gizmo_menu.py
+++ b/openpype/hosts/nuke/api/gizmo_menu.py
@@ -24,7 +24,7 @@ class GizmoMenu():
                 config = {key: value for key, value in
                           item.items() if key != "type"}
 
-                command = config['command']
+                command = str(config['command'])
 
                 if command.find('{pipe_path}') > -1:
                     command = command.format(
diff --git a/openpype/hosts/nuke/startup/menu.py b/openpype/hosts/nuke/startup/menu.py
index 88c727aaa6..6c076fc87b 100644
--- a/openpype/hosts/nuke/startup/menu.py
+++ b/openpype/hosts/nuke/startup/menu.py
@@ -71,6 +71,9 @@ def add_scripts_gizmo():
         )
         return
 
+    # load configuration of custom menu
+    project_settings = get_project_settings(os.getenv("AVALON_PROJECT"))
+
     for gizmo in project_settings["nuke"]["gizmo"]:
         config = gizmo["gizmo_definition"]
         toolbar_name = gizmo["toolbar_menu_name"]
@@ -88,7 +91,9 @@ def add_scripts_gizmo():
         try:
             icon = icon.format(**os.environ)
         except KeyError as e:
-            log.warning(f"This environment variable doesn't exist: {e}")
+            log.warning(
+                "This environment variable doesn't exist: {}".format(e)
+            )
 
         for gizmo in gizmo_path:
             try:
@@ -96,7 +101,9 @@ def add_scripts_gizmo():
                 gizmo_path.append(gizmo)
                 gizmo_path.pop(0)
             except KeyError as e:
-                log.warning(f"This environment variable doesn't exist: {e}")
+                log.warning(
+                    "This environment variable doesn't exist: {}".format(e)
+                )
 
         nuke_toolbar = nuke.menu("Nodes")
         toolbar = nuke_toolbar.addMenu(toolbar_name, icon=icon)
diff --git a/openpype/settings/defaults/project_settings/nuke.json b/openpype/settings/defaults/project_settings/nuke.json
index 06679ac314..6c6454de36 100644
--- a/openpype/settings/defaults/project_settings/nuke.json
+++ b/openpype/settings/defaults/project_settings/nuke.json
@@ -306,4 +306,4 @@
         }
     ],
     "filters": {}
-}
\ No newline at end of file
+}