diff --git a/lib/libcuse/cuse_lib.c b/lib/libcuse/cuse_lib.c
index dd25ef8f6c6c..436b5db728bd 100644
--- a/lib/libcuse/cuse_lib.c
+++ b/lib/libcuse/cuse_lib.c
@@ -184,7 +184,7 @@ cuse_vmalloc(int size)
 	if (size < 1)
 		return (NULL);
 
-	info.page_count = (size + PAGE_SIZE - 1) / PAGE_SIZE;
+	info.page_count = howmany(size, PAGE_SIZE);
 
 	CUSE_LOCK();
 	for (n = 0; n != CUSE_ALLOC_UNIT_MAX; n++) {