diff --git a/openpype/hosts/nuke/api/lib.py b/openpype/hosts/nuke/api/lib.py
index 442c0122be..7e7cd27f90 100644
--- a/openpype/hosts/nuke/api/lib.py
+++ b/openpype/hosts/nuke/api/lib.py
@@ -1665,7 +1665,7 @@ def launch_workfiles_app():
     )
     # get all imortant settings
     open_at_start = env_value_to_bool(
-        env_key="WORKFILE_STARTUP",
+        env_key="OPENPYPE_WORKFILE_TOOL_ON_START",
         default=None)
 
     # return if none is defined