diff --git a/data/mods/MindOverMatter/obsolete/eocs.json b/data/mods/MindOverMatter/obsolete/eocs.json
index 76a11772812e5..4594ded88ea98 100644
--- a/data/mods/MindOverMatter/obsolete/eocs.json
+++ b/data/mods/MindOverMatter/obsolete/eocs.json
@@ -78,6 +78,6 @@
   {
     "type": "effect_on_condition",
     "id": "EOC_BIOKIN_ENHANCE_MOBILITY_SWITCHER",
-    "effect": {  }
+    "effect": [  ]
   }
 ]