diff --git a/src/system/kernel/team.cpp b/src/system/kernel/team.cpp
index 61903e53ff..00a7da17e6 100644
--- a/src/system/kernel/team.cpp
+++ b/src/system/kernel/team.cpp
@@ -4037,6 +4037,7 @@ _user_setsid(void)
 		return B_NOT_ALLOWED;
 
 	// remove the team from the old and add it to the new process group
+	BReference<ProcessGroup> oldGroupReference(team->group);
 	remove_team_from_group(team);
 	group->Publish(session);
 	insert_team_into_group(group, team);