diff --git a/changelog b/changelog
index 5e24ad74835..0c85704fabb 100644
--- a/changelog
+++ b/changelog
@@ -14,6 +14,7 @@ Version 1.13.0-dev:
    * Stationed Guardian Micro AI: make guard_x/y= optional keys
    * Messenger Escort Micro AI: bug fix for escort units blocking messenger's
      progress
+   * Lurkers Micro AI: fix bug in wander terrain selection
    * Several Micro AIs: fix a variety of rarely occurring but serious bugs, such
      as invalid savegames or disabling the AI from working for the rest of the
      turn or after changing the Micro AI settings.
diff --git a/data/ai/micro_ais/cas/ca_lurkers.lua b/data/ai/micro_ais/cas/ca_lurkers.lua
index 28a123252a2..e46bae7a5d0 100644
--- a/data/ai/micro_ais/cas/ca_lurkers.lua
+++ b/data/ai/micro_ais/cas/ca_lurkers.lua
@@ -73,6 +73,15 @@ function ca_lurkers:execution(ai, cfg)
             })
         reachable_wander_terrain:inter(reach)
 
+        -- Need to restrict that to reachable and not occupied by an ally (except own position)
+        local reachable_wander_terrain = reachable_wander_terrain:filter(function(x, y, v)
+            local occ_hex = wesnoth.get_units {
+                x = x, y = y,
+                { "not", { x = lurker.x, y = lurker.y } }
+            }[1]
+            return not occ_hex
+        end)
+
         if (reachable_wander_terrain:size() > 0) then
             local dst = reachable_wander_terrain:to_stable_pairs()
             local rand = math.random(1, reachable_wander_terrain:size())