diff --git a/python/test/model_test.sdf b/python/test/model_test.sdf
index 31c6b3f935..ae351aa010 100644
--- a/python/test/model_test.sdf
+++ b/python/test/model_test.sdf
@@ -16,8 +16,8 @@
             </link>
 
             <joint name="model_joint_test" type="revolute">
-            <parent>model_link_test_1</parent>
-            <child>model_link_test_2</child>
+                <parent>model_link_test_1</parent>
+                <child>model_link_test_2</child>
             </joint>
 
         </model>