diff --git a/openpype/tools/pyblish_pype/control.py b/openpype/tools/pyblish_pype/control.py
index 1fa3ee657b0..2a9e67097ec 100644
--- a/openpype/tools/pyblish_pype/control.py
+++ b/openpype/tools/pyblish_pype/control.py
@@ -190,7 +190,9 @@ def load_plugins(self):
 
         plugins = pyblish.api.discover()
 
-        targets = pyblish.logic.registered_targets() or ["default"]
+        targets = set(pyblish.logic.registered_targets())
+        targets.add("default")
+        targets = list(targets)
         plugins_by_targets = pyblish.logic.plugins_by_targets(plugins, targets)
 
         _plugins = []