diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
index 7c4e8b92991e..0d3fd665773d 100644
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -2750,6 +2750,7 @@ static int __ffs_data_got_strings(struct ffs_data *ffs,
 
 	do { /* lang_count > 0 so we can use do-while */
 		unsigned needed = needed_count;
+		u32 str_per_lang = str_count;
 
 		if (unlikely(len < 3))
 			goto error_free;
@@ -2785,7 +2786,7 @@ static int __ffs_data_got_strings(struct ffs_data *ffs,
 
 			data += length + 1;
 			len -= length + 1;
-		} while (--str_count);
+		} while (--str_per_lang);
 
 		s->id = 0;   /* terminator */
 		s->s = NULL;