diff --git a/pkg/networkserver/mac/link_adr.go b/pkg/networkserver/mac/link_adr.go
index b5deae483f..e576cd3ec3 100644
--- a/pkg/networkserver/mac/link_adr.go
+++ b/pkg/networkserver/mac/link_adr.go
@@ -331,7 +331,7 @@ func HandleLinkADRAns(
 	// rejected. This behavior differs from when the uplink ADR bit is set, in which case the end-
 	// device accepts or rejects the entire command.
 	if macspec.UseADRBit(macState.LorawanVersion) {
-		rejected = (!adrEnabled && !pld.ChannelMaskAck) ||
+		rejected = !pld.ChannelMaskAck ||
 			(adrEnabled && !pld.DataRateIndexAck) ||
 			(adrEnabled && !pld.TxPowerIndexAck)
 	} else {
diff --git a/pkg/networkserver/mac/link_adr_test.go b/pkg/networkserver/mac/link_adr_test.go
index ce69986164..cd30d6b0e8 100644
--- a/pkg/networkserver/mac/link_adr_test.go
+++ b/pkg/networkserver/mac/link_adr_test.go
@@ -548,6 +548,37 @@ func TestHandleLinkADRAns(t *testing.T) {
 			Error:      ErrRequestNotFound.WithAttributes("cid", ttnpb.MACCommandIdentifier_CID_LINK_ADR),
 			AdrEnabled: false,
 		},
+		{
+			Name: "1.0.4/channel mask off/adr disabled/rejected",
+			Device: &ttnpb.EndDevice{
+				FrequencyPlanId:   test.EUFrequencyPlanID,
+				LorawanPhyVersion: ttnpb.PHYVersion_RP002_V1_0_4,
+				MacState: &ttnpb.MACState{
+					LorawanVersion: ttnpb.MACVersion_MAC_V1_0_4,
+				},
+			},
+			Expected: &ttnpb.EndDevice{
+				FrequencyPlanId:   test.EUFrequencyPlanID,
+				LorawanPhyVersion: ttnpb.PHYVersion_RP002_V1_0_4,
+				MacState: &ttnpb.MACState{
+					LorawanVersion: ttnpb.MACVersion_MAC_V1_0_4,
+				},
+			},
+			Payload: &ttnpb.MACCommand_LinkADRAns{
+				ChannelMaskAck:   false,
+				DataRateIndexAck: false,
+				TxPowerIndexAck:  false,
+			},
+			Events: events.Builders{
+				EvtReceiveLinkADRReject.With(events.WithData(&ttnpb.MACCommand_LinkADRAns{
+					ChannelMaskAck:   false,
+					DataRateIndexAck: false,
+					TxPowerIndexAck:  false,
+				})),
+			},
+			Error:      ErrRequestNotFound.WithAttributes("cid", ttnpb.MACCommandIdentifier_CID_LINK_ADR),
+			AdrEnabled: false,
+		},
 		{
 			Name: "1.0.4/channel mask on/adr enabled/rejected",
 			Device: &ttnpb.EndDevice{
@@ -579,6 +610,37 @@ func TestHandleLinkADRAns(t *testing.T) {
 			Error:      ErrRequestNotFound.WithAttributes("cid", ttnpb.MACCommandIdentifier_CID_LINK_ADR),
 			AdrEnabled: true,
 		},
+		{
+			Name: "1.0.4/channel mask off/adr enabled/rejected",
+			Device: &ttnpb.EndDevice{
+				FrequencyPlanId:   test.EUFrequencyPlanID,
+				LorawanPhyVersion: ttnpb.PHYVersion_RP002_V1_0_4,
+				MacState: &ttnpb.MACState{
+					LorawanVersion: ttnpb.MACVersion_MAC_V1_0_4,
+				},
+			},
+			Expected: &ttnpb.EndDevice{
+				FrequencyPlanId:   test.EUFrequencyPlanID,
+				LorawanPhyVersion: ttnpb.PHYVersion_RP002_V1_0_4,
+				MacState: &ttnpb.MACState{
+					LorawanVersion: ttnpb.MACVersion_MAC_V1_0_4,
+				},
+			},
+			Payload: &ttnpb.MACCommand_LinkADRAns{
+				ChannelMaskAck:   false,
+				DataRateIndexAck: false,
+				TxPowerIndexAck:  false,
+			},
+			Events: events.Builders{
+				EvtReceiveLinkADRReject.With(events.WithData(&ttnpb.MACCommand_LinkADRAns{
+					ChannelMaskAck:   false,
+					DataRateIndexAck: false,
+					TxPowerIndexAck:  false,
+				})),
+			},
+			Error:      ErrRequestNotFound.WithAttributes("cid", ttnpb.MACCommandIdentifier_CID_LINK_ADR),
+			AdrEnabled: true,
+		},
 		{
 			Name: "1 request/all ack",
 			Device: &ttnpb.EndDevice{