diff --git a/lib/test_printf.c b/lib/test_printf.c
index 659b6cc..e8206d8 100644
--- a/lib/test_printf.c
+++ b/lib/test_printf.c
@@ -481,14 +481,14 @@ static void __init
 large_bitmap(void)
 {
 	const int nbits = 1 << 16;
-	unsigned long *bits = kcalloc(BITS_TO_LONGS(nbits), sizeof(long), GFP_KERNEL);
+	unsigned long *bits = bitmap_zalloc(nbits, GFP_KERNEL);
 	if (!bits)
 		return;
 
 	bitmap_set(bits, 1, 20);
 	bitmap_set(bits, 60000, 15);
 	test("1-20,60000-60014", "%*pbl", nbits, bits);
-	kfree(bits);
+	bitmap_free(bits);
 }
 
 static void __init