diff --git a/util/util.c b/util/util.c
index ad5418e..00f7315 100644
--- a/util/util.c
+++ b/util/util.c
@@ -86,17 +86,19 @@ void *mmap_hugetlbfs(const char *htlbfs_path, u64 size)
 	int fd;
 	struct statfs sfs;
 	void *addr;
+	unsigned long blk_size;
 
 	if (statfs(htlbfs_path, &sfs) < 0)
 		die("Can't stat %s\n", htlbfs_path);
 
-	if (sfs.f_type != HUGETLBFS_MAGIC) {
+	if ((unsigned int)sfs.f_type != HUGETLBFS_MAGIC) {
 		die("%s is not hugetlbfs!\n", htlbfs_path);
 	}
 
-	if (sfs.f_bsize == 0 || (unsigned long)sfs.f_bsize > size) {
+	blk_size = (unsigned long)sfs.f_bsize;
+	if (sfs.f_bsize == 0 || blk_size > size) {
 		die("Can't use hugetlbfs pagesize %ld for mem size %lld\n",
-		    sfs.f_bsize, size);
+		    blk_size, size);
 	}
 
 	snprintf(mpath, PATH_MAX, "%s/kvmtoolXXXXXX", htlbfs_path);