diff --git a/tools/testing/selftests/vm/mlock2-tests.c b/tools/testing/selftests/vm/mlock2-tests.c
index cb247219f1f7..02ca5e0177c5 100644
--- a/tools/testing/selftests/vm/mlock2-tests.c
+++ b/tools/testing/selftests/vm/mlock2-tests.c
@@ -277,8 +277,8 @@ out:
 	return ret;
 }
 
-#define PRESENT_BIT     0x8000000000000000
-#define PFN_MASK        0x007FFFFFFFFFFFFF
+#define PRESENT_BIT     0x8000000000000000ULL
+#define PFN_MASK        0x007FFFFFFFFFFFFFULL
 #define UNEVICTABLE_BIT (1UL << 18)
 
 static int lock_check(char *map)