diff --git a/apps/backend/internal/agent/lifecycle/executor_backend.go b/apps/backend/internal/agent/lifecycle/executor_backend.go
index b437140def..b0ffe6a834 100644
--- a/apps/backend/internal/agent/lifecycle/executor_backend.go
+++ b/apps/backend/internal/agent/lifecycle/executor_backend.go
@@ -86,7 +86,6 @@ var persistentMetadataKeys = map[string]bool{
 	"sprite_state":      true,
 	"sprite_created_at": true,
 	"local_port":        true,
-	"instance_port":     true,
 
 	// Executor type marker
 	MetadataKeyIsRemote: true,