diff --git a/brick/model.sdf b/brick/model.sdf
index c26e75b..0d909af 100755
--- a/brick/model.sdf
+++ b/brick/model.sdf
@@ -7,10 +7,10 @@
         <pose frame=''> 0 0 0.0 -0 0</pose>
         <mass>0.7</mass>
         <inertia>
-          <ixx>0.17</ixx>
+          <ixx>0.0017</ixx>
           <ixy>0</ixy>
           <ixz>0</ixz>
-          <iyy>0.17</iyy>
+          <iyy>0.0017</iyy>
           <iyz>0</iyz>
           <izz>0</izz>
         </inertia>