diff --git a/docs/zengin/worlds/Classes/zCEarthquake.md b/docs/zengin/worlds/Classes/zCEarthquake.md
index f04cb1de22..da07f4111d 100644
--- a/docs/zengin/worlds/Classes/zCEarthquake.md
+++ b/docs/zengin/worlds/Classes/zCEarthquake.md
@@ -27,6 +27,8 @@ by a shaking camera.
 
     - [zCVob](zCVob.md)
       {: .sp-class}
+    - [zCEffect](zCEffect.md)
+      {: .sp-class}
     - zCEarthquake
       {: .sp-class}
         - Earthquake
@@ -46,6 +48,8 @@ by a shaking camera.
 
     - [zCVob](zCVob.md)
       {: .sp-class}
+    - [zCEffect](zCEffect.md)
+      {: .sp-class}
     - zCEarthquake
       {: .sp-class}
         - Earthquake