diff --git a/check/main.c b/check/main.c
index 7d8f43a8..afa88d90 100644
--- a/check/main.c
+++ b/check/main.c
@@ -601,6 +601,9 @@ static void print_inode_error(struct btrfs_root *root, struct inode_record *rec)
 		fprintf(stderr, ", odd inode flags");
 	if (errors & I_ERR_INLINE_RAM_BYTES_WRONG)
 		fprintf(stderr, ", invalid inline ram bytes");
+	if (errors & I_ERR_INVALID_IMODE)
+		fprintf(stderr, ", invalid inode mode bit 0%o",
+			rec->imode & ~07777);
 	fprintf(stderr, "\n");
 
 	/* Print the holes if needed */
@@ -793,6 +796,8 @@ static void maybe_free_inode_rec(struct cache_tree *inode_cache,
 	if (!rec->checked || rec->merging)
 		return;
 
+	if (!is_valid_imode(rec->imode))
+		rec->errors |= I_ERR_INVALID_IMODE;
 	if (S_ISDIR(rec->imode)) {
 		if (rec->found_size != rec->isize)
 			rec->errors |= I_ERR_DIR_ISIZE_WRONG;
diff --git a/check/mode-original.h b/check/mode-original.h
index da2b6d81..f4334d9d 100644
--- a/check/mode-original.h
+++ b/check/mode-original.h
@@ -184,6 +184,7 @@ struct unaligned_extent_rec_t {
 #define I_ERR_ODD_INODE_FLAGS		(1 << 16)
 #define I_ERR_INLINE_RAM_BYTES_WRONG	(1 << 17)
 #define I_ERR_MISMATCH_DIR_HASH		(1 << 18)
+#define I_ERR_INVALID_IMODE		(1 << 19)
 
 struct inode_record {
 	struct list_head backrefs;