diff --git a/x/ibc/04-channel/keeper/packet.go b/x/ibc/04-channel/keeper/packet.go
index 8b1cad2111..e14e51579a 100644
--- a/x/ibc/04-channel/keeper/packet.go
+++ b/x/ibc/04-channel/keeper/packet.go
@@ -246,6 +246,13 @@ func (k Keeper) PacketExecuted(
 	}
 
 	if len(acknowledgement) > 0 || channel.Ordering == types.UNORDERED {
+		if _, found := k.GetPacketAcknowledgement(ctx, packet.GetDestPort(), packet.GetDestChannel(), packet.GetSequence()); found {
+			return sdkerrors.Wrapf(
+				types.ErrInvalidPacket,
+				"packet sequence (%d) already has been received", packet.GetSequence(),
+			)
+		}
+
 		k.SetPacketAcknowledgement(
 			ctx, packet.GetDestPort(), packet.GetDestChannel(), packet.GetSequence(),
 			types.CommitAcknowledgement(acknowledgement),