diff --git a/lib/ansible/module_utils/facts.py b/lib/ansible/module_utils/facts.py
index b6030440b4b..98f77e68682 100644
--- a/lib/ansible/module_utils/facts.py
+++ b/lib/ansible/module_utils/facts.py
@@ -1397,7 +1397,7 @@ class Darwin(Hardware):
 
         rc, out, err = module.run_command("sysctl hw.usermem")
         if rc == 0:
-            self.facts['memfree_mb'] = long(out.splitlines()[-1].split()[1]) / 1024
+            self.facts['memfree_mb'] = long(out.splitlines()[-1].split()[1]) / 1024 / 1024
 
 class Network(Facts):
     """