diff --git a/client/ayon_core/plugins/publish/collect_farm_env_variables.py b/client/ayon_core/plugins/publish/collect_farm_env_variables.py
index 0201973643..7b4618527b 100644
--- a/client/ayon_core/plugins/publish/collect_farm_env_variables.py
+++ b/client/ayon_core/plugins/publish/collect_farm_env_variables.py
@@ -23,8 +23,6 @@ class CollectCoreJobEnvVars(pyblish.api.ContextPlugin):
             "AYON_WORKDIR",
             "AYON_LOG_NO_COLORS",
             "AYON_IN_TESTS",
-            # backwards compatibility
-            "IS_TEST",
         ]:
             value = os.getenv(key)
             if value: