diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c
index 4518dc6bb5af..51df6d1d1487 100644
--- a/drivers/usb/gadget/configfs.c
+++ b/drivers/usb/gadget/configfs.c
@@ -1177,7 +1177,7 @@ static ssize_t os_desc_qw_sign_show(struct config_item *item, char *page)
 	struct gadget_info *gi = os_desc_item_to_gadget_info(item);
 	int res;
 
-	res = utf16s_to_utf8s((wchar_t *) gi->qw_sign, OS_STRING_QW_SIGN_LEN,
+	res = utf16s_to_utf8s((wchar_t *) gi->qw_sign, OS_STRING_QW_SIGN_LEN / 2,
 			      UTF16_LITTLE_ENDIAN, page, PAGE_SIZE - 1);
 	page[res++] = '\n';
 
@@ -1199,7 +1199,7 @@ static ssize_t os_desc_qw_sign_store(struct config_item *item, const char *page,
 	mutex_lock(&gi->lock);
 	res = utf8s_to_utf16s(page, l,
 			      UTF16_LITTLE_ENDIAN, (wchar_t *) gi->qw_sign,
-			      OS_STRING_QW_SIGN_LEN);
+			      OS_STRING_QW_SIGN_LEN / 2);
 	if (res > 0)
 		res = len;
 	mutex_unlock(&gi->lock);