diff --git a/openpype/lib/applications.py b/openpype/lib/applications.py
index 9866400928..1eac7ea776 100644
--- a/openpype/lib/applications.py
+++ b/openpype/lib/applications.py
@@ -179,7 +179,7 @@ class Application:
         if group.enabled:
             enabled = data.get("enabled", True)
         self.enabled = enabled
-        self.use_python_2 = data["use_python_2"]
+        self.use_python_2 = data.get("use_python_2", False)
 
         self.label = data.get("variant_label") or name
         self.full_name = "/".join((group.name, name))