diff --git a/android/hal-ipc-api.txt b/android/hal-ipc-api.txt
index c98c2ba..b004200 100644
--- a/android/hal-ipc-api.txt
+++ b/android/hal-ipc-api.txt
@@ -1849,6 +1849,16 @@ Android HAL name: "gatt" (BT_PROFILE_GATT_ID)
 		                     Instance ID (1 octet)
 
 	Opcode 0x88 - Get Descriptor notification
+
+		Notification parameters: Connection ID (4 octets)
+		                         Status (4 octets)
+		                         GATT Service ID (18 octets)
+		                         GATT Char. ID (17 octets)
+		                         GATT Descr. ID (17 octets)
+		Valid GATT Service & Char. ID: As described in Get Characteristic
+		Valid GATT Descr. ID: UUID (16 octets)
+		                      Instance ID (1 octet)
+
 	Opcode 0x89 - Get Included Service notification
 	Opcode 0x8a - Register For Notification notification
 	Opcode 0x8b - Notify notification
diff --git a/android/hal-msg.h b/android/hal-msg.h
index a194d91..0d6a108 100644
--- a/android/hal-msg.h
+++ b/android/hal-msg.h
@@ -1276,3 +1276,12 @@ struct hal_ev_gatt_client_get_characteristic {
 	struct hal_gatt_gatt_id char_id;
 	int32_t char_prop;
 } __attribute__((packed));
+
+#define HAL_EV_GATT_CLIENT_GET_DESCRIPTOR	0x88
+struct hal_ev_gatt_client_get_descriptor {
+	int32_t conn_id;
+	int32_t status;
+	struct hal_gatt_srvc_id srvc_id;
+	struct hal_gatt_gatt_id char_id;
+	struct hal_gatt_gatt_id descr_id;
+} __attribute__((packed));