diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 73c254085a41cea875c3a32ce31dcce4311d166c..04a3d92aafb467ade47d7996f5676ca0f77a74b3 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -4811,7 +4811,7 @@ static void ext4_trim_extent(struct super_block *sb, int start, int count,
 /**
  * ext4_trim_all_free -- function to trim all free space in alloc. group
  * @sb:			super block for file system
- * @e4b:		ext4 buddy
+ * @group:		group to be trimmed
  * @start:		first group block to examine
  * @max:		last group block to examine
  * @minblocks:		minimum extent block count