diff --git a/modules/enet/enet_packet_peer.cpp b/modules/enet/enet_packet_peer.cpp
index ecc4afe486e..35e15b3ee13 100644
--- a/modules/enet/enet_packet_peer.cpp
+++ b/modules/enet/enet_packet_peer.cpp
@@ -176,6 +176,8 @@ int ENetPacketPeer::get_channels() const {
 }
 
 int ENetPacketPeer::get_packet_flags() const {
+	ERR_FAIL_NULL_V(peer, ERR_UNCONFIGURED);
+	ERR_FAIL_COND_V(packet_queue.is_empty(), ERR_UNAVAILABLE);
 	return packet_queue.front()->get()->flags;
 }