diff --git a/psutil/tests/test_osx.py b/psutil/tests/test_osx.py
index 3141cef90..af1264841 100755
--- a/psutil/tests/test_osx.py
+++ b/psutil/tests/test_osx.py
@@ -192,13 +192,13 @@ def test_vmem_wired(self):
     def test_swapmem_sin(self):
         vmstat_val = vm_stat("Pageins")
         psutil_val = psutil.swap_memory().sin
-        self.assertEqual(psutil_val, vmstat_val, delta=TOLERANCE_SYS_MEM)
+        self.assertAlmostEqual(psutil_val, vmstat_val, delta=TOLERANCE_SYS_MEM)
 
     @retry_on_failure()
     def test_swapmem_sout(self):
         vmstat_val = vm_stat("Pageout")
         psutil_val = psutil.swap_memory().sout
-        self.assertEqual(psutil_val, vmstat_val, delta=TOLERANCE_SYS_MEM)
+        self.assertAlmostEqual(psutil_val, vmstat_val, delta=TOLERANCE_SYS_MEM)
 
     # Not very reliable.
     # def test_swapmem_total(self):