diff --git a/fs/omfs/bitmap.c b/fs/omfs/bitmap.c
index 697663b..e1c0ec0 100644
--- a/fs/omfs/bitmap.c
+++ b/fs/omfs/bitmap.c
@@ -92,7 +92,7 @@
 	struct buffer_head *bh;
 	struct omfs_sb_info *sbi = OMFS_SB(sb);
 	int bits_per_entry = 8 * sb->s_blocksize;
-	int map, bit;
+	unsigned int map, bit;
 	int ret = 0;
 	u64 tmp;
 
@@ -176,7 +176,8 @@
 	struct omfs_sb_info *sbi = OMFS_SB(sb);
 	int bits_per_entry = 8 * sb->s_blocksize;
 	u64 tmp;
-	int map, bit, ret;
+	unsigned int map, bit;
+	int ret;
 
 	tmp = block;
 	bit = do_div(tmp, bits_per_entry);