diff --git a/openpype/hosts/nuke/hooks/__init__.py b/openpype/hosts/nuke/hooks/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/openpype/hosts/nuke/hooks/pre_nukeassist_setup.py b/openpype/hosts/nuke/hooks/pre_nukeassist_setup.py
new file mode 100644
index 0000000000..80696c34e5
--- /dev/null
+++ b/openpype/hosts/nuke/hooks/pre_nukeassist_setup.py
@@ -0,0 +1,10 @@
+from openpype.lib import PreLaunchHook
+
+class PrelaunchNukeAssistHook(PreLaunchHook):
+    """
+    Adding flag when nukeassist
+    """
+    app_groups = ["nukeassist"]
+
+    def execute(self):
+        self.launch_context.env["NUKEASSIST"] = True