diff --git a/libfwupdplugin/fu-common.c b/libfwupdplugin/fu-common.c
index 03c4c14a1..847f1db92 100644
--- a/libfwupdplugin/fu-common.c
+++ b/libfwupdplugin/fu-common.c
@@ -2492,6 +2492,23 @@ fu_byte_array_append_uint64 (GByteArray *array, guint64 data, FuEndianType endia
 	g_byte_array_append (array, buf, sizeof(buf));
 }
 
+/**
+ * fu_byte_array_append_bytes:
+ * @array: A #GByteArray
+ * @bytes:  A #GBytes
+ *
+ * Adds the contents of a GBytes to a byte array
+ *
+ * Since: 1.5.8
+ **/
+void
+fu_byte_array_append_bytes (GByteArray *array, GBytes *bytes)
+{
+	g_byte_array_append (array,
+			     g_bytes_get_data (bytes, NULL),
+			     g_bytes_get_size (bytes));
+}
+
 /**
  * fu_byte_array_set_size:
  * @array: a #GByteArray
diff --git a/libfwupdplugin/fu-common.h b/libfwupdplugin/fu-common.h
index 86ecf9d7d..86c76a119 100644
--- a/libfwupdplugin/fu-common.h
+++ b/libfwupdplugin/fu-common.h
@@ -272,6 +272,8 @@ void		 fu_byte_array_append_uint32	(GByteArray	*array,
 void		 fu_byte_array_append_uint64	(GByteArray	*array,
 						 guint64	 data,
 						 FuEndianType	 endian);
+void		 fu_byte_array_append_bytes	(GByteArray	*array,
+						 GBytes		*bytes);
 
 void		 fu_common_write_uint16		(guint8		*buf,
 						 guint16	 val_native,
diff --git a/libfwupdplugin/fwupdplugin.map b/libfwupdplugin/fwupdplugin.map
index 92ef1e2c8..0a0dea8bc 100644
--- a/libfwupdplugin/fwupdplugin.map
+++ b/libfwupdplugin/fwupdplugin.map
@@ -736,6 +736,7 @@ LIBFWUPDPLUGIN_1.5.8 {
   global:
     fu_bluez_device_notify_start;
     fu_bluez_device_notify_stop;
+    fu_byte_array_append_bytes;
     fu_byte_array_append_uint64;
     fu_common_read_uint64;
     fu_common_read_uint64_safe;
diff --git a/plugins/bcm57xx/fu-bcm57xx-firmware.c b/plugins/bcm57xx/fu-bcm57xx-firmware.c
index 9f1264da2..6e66f7a1f 100644
--- a/plugins/bcm57xx/fu-bcm57xx-firmware.c
+++ b/plugins/bcm57xx/fu-bcm57xx-firmware.c
@@ -396,12 +396,6 @@ fu_bcm57xx_firmware_parse (FuFirmware *firmware,
 	return TRUE;
 }
 
-static void
-_g_byte_array_append_bytes (GByteArray *buf, GBytes *bytes)
-{
-	g_byte_array_append (buf, g_bytes_get_data (bytes, NULL), g_bytes_get_size (bytes));
-}
-
 static GBytes *
 _g_bytes_new_sized (gsize sz)
 {
@@ -519,7 +513,7 @@ fu_bcm57xx_firmware_write (FuFirmware *firmware, GError **error)
 					self->model, G_BIG_ENDIAN);
 		blob_info = g_byte_array_free_to_bytes (tmp);
 	}
-	_g_byte_array_append_bytes (buf, blob_info);
+	fu_byte_array_append_bytes (buf, blob_info);
 
 	/* add vpd */
 	img_vpd = fu_firmware_get_image_by_id (firmware, "vpd", NULL);
@@ -530,7 +524,7 @@ fu_bcm57xx_firmware_write (FuFirmware *firmware, GError **error)
 	} else {
 		blob_vpd = _g_bytes_new_sized (BCM_NVRAM_VPD_SZ);
 	}
-	_g_byte_array_append_bytes (buf, blob_vpd);
+	fu_byte_array_append_bytes (buf, blob_vpd);
 
 	/* add info2 */
 	img_info2 = fu_firmware_get_image_by_id (firmware, "info2", NULL);
@@ -541,16 +535,16 @@ fu_bcm57xx_firmware_write (FuFirmware *firmware, GError **error)
 	} else {
 		blob_info2 = _g_bytes_new_sized (BCM_NVRAM_INFO2_SZ);
 	}
-	_g_byte_array_append_bytes (buf, blob_info2);
+	fu_byte_array_append_bytes (buf, blob_info2);
 
 	/* add stage1+2 */
-	_g_byte_array_append_bytes (buf, blob_stage1);
-	_g_byte_array_append_bytes (buf, blob_stage2);
+	fu_byte_array_append_bytes (buf, blob_stage1);
+	fu_byte_array_append_bytes (buf, blob_stage2);
 
 	/* add dictionaries, e.g. APE */
 	for (guint i = 0; i < blob_dicts->len; i++) {
 		GBytes *blob = g_ptr_array_index (blob_dicts, i);
-		_g_byte_array_append_bytes (buf, blob);
+		fu_byte_array_append_bytes (buf, blob);
 	}
 
 	/* pad until full */
diff --git a/plugins/elantp/fu-elantp-firmware.c b/plugins/elantp/fu-elantp-firmware.c
index 1770e57cd..d12c6f5b7 100644
--- a/plugins/elantp/fu-elantp-firmware.c
+++ b/plugins/elantp/fu-elantp-firmware.c
@@ -168,7 +168,7 @@ fu_elantp_firmware_write (FuFirmware *firmware, GError **error)
 					  self->module_id,
 					  G_LITTLE_ENDIAN, error))
 		return NULL;
-	g_byte_array_append (buf, g_bytes_get_data (blob, NULL), g_bytes_get_size (blob));
+	fu_byte_array_append_bytes (buf, blob);
 	g_byte_array_append (buf, elantp_signature, sizeof(elantp_signature));
 	return g_byte_array_free_to_bytes (g_steal_pointer (&buf));
 }
diff --git a/plugins/solokey/fu-solokey-device.c b/plugins/solokey/fu-solokey-device.c
index 517d1b46d..e36aaa8a4 100644
--- a/plugins/solokey/fu-solokey-device.c
+++ b/plugins/solokey/fu-solokey-device.c
@@ -411,7 +411,7 @@ fu_solokey_device_verify (FuSolokeyDevice *self, GBytes *fw_sig, GError **error)
 	g_autoptr(GByteArray) sig = g_byte_array_new ();
 
 	fu_device_set_status (FU_DEVICE (self), FWUPD_STATUS_DEVICE_VERIFY);
-	g_byte_array_append (sig, g_bytes_get_data (fw_sig, NULL), g_bytes_get_size (fw_sig));
+	fu_byte_array_append_bytes (sig, fw_sig);
 	fu_solokey_device_exchange (req, SOLO_BOOTLOADER_DONE, 0x00, sig);
 	res = fu_solokey_device_packet (self, SOLO_BOOTLOADER_HID_CMD_BOOT, req, error);
 	if (res == NULL)