diff --git a/core/src/com/unciv/logic/automation/city/ConstructionAutomation.kt b/core/src/com/unciv/logic/automation/city/ConstructionAutomation.kt
index 24d507ed44..7fbc1324b1 100644
--- a/core/src/com/unciv/logic/automation/city/ConstructionAutomation.kt
+++ b/core/src/com/unciv/logic/automation/city/ConstructionAutomation.kt
@@ -203,7 +203,7 @@ class ConstructionAutomation(val cityConstructions: CityConstructions) {
         // todo Still ignores whether that boat can reach the not-yet-found tile to improve
         val twoTurnsMovement = buildableWorkboatUnits.maxOf { it.movement } * 2
         fun MapUnit.isOurWorkBoat() = cache.hasUniqueToCreateWaterImprovements && this.civ == this@ConstructionAutomation.civInfo
-        val alreadyHasWorkBoat = city.getCenterTile().getTilesInDistanceRange(1..twoTurnsMovement)
+        val alreadyHasWorkBoat = city.getCenterTile().getTilesInDistance(twoTurnsMovement)
             .any { it.civilianUnit?.isOurWorkBoat() == true }
         if (alreadyHasWorkBoat) return