diff --git a/core/src/com/unciv/logic/automation/WorkerAutomation.kt b/core/src/com/unciv/logic/automation/WorkerAutomation.kt
index b75df06a57..bab3b53009 100644
--- a/core/src/com/unciv/logic/automation/WorkerAutomation.kt
+++ b/core/src/com/unciv/logic/automation/WorkerAutomation.kt
@@ -122,6 +122,8 @@ class WorkerAutomation(val unit: MapUnit) {
                 .filter {
                     (it.civilianUnit == null || it == currentTile)
                             && tileCanBeImproved(it, unit.civInfo)
+                            && it.getTilesInDistance(2)
+                                .none { it.isCityCenter() && it.getCity()!!.civInfo.isAtWarWith(unit.civInfo) }
                 }
                 .sortedByDescending { getPriority(it, unit.civInfo) }