diff --git a/config/arm.xacro b/config/arm.xacro
index 0556385fe5b20beb9668550d5e129ffb1d269c92..9219e3a4585eaecf9d738966dbe3740dc954c371 100644
--- a/config/arm.xacro
+++ b/config/arm.xacro
@@ -51,20 +51,16 @@
     <enable_collisions link1="$(arg arm_id)_link0_sc" link2="$(arg arm_id)_link5_sc" />
     <enable_collisions link1="$(arg arm_id)_link0_sc" link2="$(arg arm_id)_link6_sc" />
     <enable_collisions link1="$(arg arm_id)_link0_sc" link2="$(arg arm_id)_link7_sc" />
-    <enable_collisions link1="$(arg arm_id)_link0_sc" link2="$(arg arm_id)_link8_sc" />
     <xacro:collision link="$(arg arm_id)_link1" />
     <enable_collisions link1="$(arg arm_id)_link1_sc" link2="$(arg arm_id)_link5_sc" />
     <enable_collisions link1="$(arg arm_id)_link1_sc" link2="$(arg arm_id)_link6_sc" />
     <enable_collisions link1="$(arg arm_id)_link1_sc" link2="$(arg arm_id)_link7_sc" />
-    <enable_collisions link1="$(arg arm_id)_link1_sc" link2="$(arg arm_id)_link8_sc" />
     <xacro:collision link="$(arg arm_id)_link2" />
     <enable_collisions link1="$(arg arm_id)_link2_sc" link2="$(arg arm_id)_link5_sc" />
     <enable_collisions link1="$(arg arm_id)_link2_sc" link2="$(arg arm_id)_link6_sc" />
     <enable_collisions link1="$(arg arm_id)_link2_sc" link2="$(arg arm_id)_link7_sc" />
-    <enable_collisions link1="$(arg arm_id)_link2_sc" link2="$(arg arm_id)_link8_sc" />
     <xacro:collision link="$(arg arm_id)_link3" />
     <enable_collisions link1="$(arg arm_id)_link3_sc" link2="$(arg arm_id)_link7_sc" />
-    <enable_collisions link1="$(arg arm_id)_link3_sc" link2="$(arg arm_id)_link8_sc" />
     <xacro:collision link="$(arg arm_id)_link4" />
     <xacro:collision link="$(arg arm_id)_link5" />
     <xacro:collision link="$(arg arm_id)_link6" />