diff --git a/kdl_parser/test/test_robot.urdf b/kdl_parser/test/test_robot.urdf
index 467d133..731e1f3 100644
--- a/kdl_parser/test/test_robot.urdf
+++ b/kdl_parser/test/test_robot.urdf
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <robot name="r2d2">
 
-<material name="blue">
+  <material name="blue">
     <color rgba="0 0 .8 1"/>
   </material>
   <material name="black">
diff --git a/urdf/test/test_robot.urdf b/urdf/test/test_robot.urdf
index 467d133..731e1f3 100644
--- a/urdf/test/test_robot.urdf
+++ b/urdf/test/test_robot.urdf
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <robot name="r2d2">
 
-<material name="blue">
+  <material name="blue">
     <color rgba="0 0 .8 1"/>
   </material>
   <material name="black">