diff --git a/check/mode-common.c b/check/mode-common.c
index 466e7a8d..95dc32d8 100644
--- a/check/mode-common.c
+++ b/check/mode-common.c
@@ -21,6 +21,7 @@
 #include "transaction.h"
 #include "utils.h"
 #include "disk-io.h"
+#include "repair.h"
 #include "check/mode-common.h"
 
 /*
@@ -889,3 +890,37 @@ abort:
 	btrfs_abort_transaction(trans, ret);
  	return ret;
 }
+
+/*
+ * For free space inodes, we can't call check_inode_item() as free space
+ * cache inode doesn't have INODE_REF.
+ * We just check its inode mode.
+ */
+int check_repair_free_space_inode(struct btrfs_fs_info *fs_info,
+				  struct btrfs_path *path)
+{
+	struct btrfs_inode_item *iitem;
+	struct btrfs_key key;
+	u32 mode;
+	int ret = 0;
+
+	btrfs_item_key_to_cpu(path->nodes[0], &key, path->slots[0]);
+	ASSERT(key.type == BTRFS_INODE_ITEM_KEY && is_fstree(key.objectid));
+	iitem = btrfs_item_ptr(path->nodes[0], path->slots[0],
+			       struct btrfs_inode_item);
+	mode = btrfs_inode_mode(path->nodes[0], iitem);
+	if (mode != FREE_SPACE_CACHE_INODE_MODE) {
+		error(
+	"free space cache inode %llu has invalid mode: has 0%o expect 0%o",
+			key.objectid, mode, FREE_SPACE_CACHE_INODE_MODE);
+		ret = -EUCLEAN;
+		if (repair) {
+			ret = repair_imode_common(fs_info->tree_root,
+						  path);
+			if (ret < 0)
+				return ret;
+			return ret;
+		}
+	}
+	return ret;
+}
diff --git a/check/mode-common.h b/check/mode-common.h
index 5aaf3aaa..4c169c6e 100644
--- a/check/mode-common.h
+++ b/check/mode-common.h
@@ -24,6 +24,7 @@
 #include <sys/stat.h>
 #include "ctree.h"
 
+#define FREE_SPACE_CACHE_INODE_MODE	(0100600)
 /*
  * Use for tree walk to walk through trees whose leaves/nodes can be shared
  * between different trees. (Namely subvolume/fs trees)
@@ -128,7 +129,8 @@ int delete_corrupted_dir_item(struct btrfs_trans_handle *trans,
 int reset_imode(struct btrfs_trans_handle *trans, struct btrfs_root *root,
 		struct btrfs_path *path, u64 ino, u32 mode);
 int repair_imode_common(struct btrfs_root *root, struct btrfs_path *path);
-
+int check_repair_free_space_inode(struct btrfs_fs_info *fs_info,
+				  struct btrfs_path *path);
 /*
  * Check if the inode mode @imode is valid
  *
diff --git a/check/mode-lowmem.c b/check/mode-lowmem.c
index 94856b4c..6d7ae2bc 100644
--- a/check/mode-lowmem.c
+++ b/check/mode-lowmem.c
@@ -5145,6 +5145,17 @@ int check_fs_roots_lowmem(struct btrfs_fs_info *fs_info)
 		btrfs_item_key_to_cpu(node, &key, slot);
 		if (key.objectid > BTRFS_LAST_FREE_OBJECTID)
 			goto out;
+		if (key.type == BTRFS_INODE_ITEM_KEY &&
+		    is_fstree(key.objectid)) {
+			ret = check_repair_free_space_inode(fs_info, &path);
+			/* Check if we still have a valid path to continue */
+			if (ret < 0 && path.nodes[0]) {
+				err |= ret;
+				goto next;
+			}
+			if (ret < 0 && !path.nodes[0])
+				goto out;
+		}
 		if (key.type == BTRFS_ROOT_ITEM_KEY &&
 		    fs_root_objectid(key.objectid)) {
 			if (key.objectid == BTRFS_TREE_RELOC_OBJECTID) {
diff --git a/check/mode-lowmem.h b/check/mode-lowmem.h
index e0ab30b7..d2983fd1 100644
--- a/check/mode-lowmem.h
+++ b/check/mode-lowmem.h
@@ -67,5 +67,7 @@
 
 int check_fs_roots_lowmem(struct btrfs_fs_info *fs_info);
 int check_chunks_and_extents_lowmem(struct btrfs_fs_info *fs_info);
+int check_repair_free_space_inode(struct btrfs_fs_info *fs_info,
+				  struct btrfs_path *path);
 
 #endif