diff --git a/molecule/ec2-centos-7/tests/test_default.py b/molecule/ec2-centos-7/tests/test_default.py
index 4b263bd..cda4ab7 100644
--- a/molecule/ec2-centos-7/tests/test_default.py
+++ b/molecule/ec2-centos-7/tests/test_default.py
@@ -22,4 +22,4 @@ def test_postgres_running_and_enabled(host):
 
 def test_postgres_socket(host):
     # Verify the socket is listening for HTTP traffic
-    assert host.socket("tcp://0.0.0.0:5432").is_listening
+    assert host.socket("tcp://127.0.0.1:5432").is_listening