diff --git a/fs/incfs/format.c b/fs/incfs/format.c
index 1a7c4646a291..ff3a2219fc24 100644
--- a/fs/incfs/format.c
+++ b/fs/incfs/format.c
@@ -450,7 +450,8 @@ int incfs_write_hash_block_to_backing_file(struct backing_file_context *bfc,
 					   struct mem_range block,
 					   int block_index,
 					   loff_t hash_area_off,
-					   loff_t bm_base_off, int file_size)
+					   loff_t bm_base_off,
+					   loff_t file_size)
 {
 	struct incfs_blockmap_entry bm_entry = {};
 	int result;
diff --git a/fs/incfs/format.h b/fs/incfs/format.h
index f1095dc3c3dd..d57a7b479721 100644
--- a/fs/incfs/format.h
+++ b/fs/incfs/format.h
@@ -303,7 +303,8 @@ int incfs_write_hash_block_to_backing_file(struct backing_file_context *bfc,
 					   struct mem_range block,
 					   int block_index,
 					   loff_t hash_area_off,
-					   loff_t bm_base_off, int file_size);
+					   loff_t bm_base_off,
+					   loff_t file_size);
 
 int incfs_write_file_attr_to_backing_file(struct backing_file_context *bfc,
 		struct mem_range value, struct incfs_file_attr *attr);