diff --git a/core/src/com/unciv/logic/map/MapUnit.kt b/core/src/com/unciv/logic/map/MapUnit.kt
index 9593f4a952..02e2b823fb 100644
--- a/core/src/com/unciv/logic/map/MapUnit.kt
+++ b/core/src/com/unciv/logic/map/MapUnit.kt
@@ -384,6 +384,13 @@ class MapUnit {
         currentMovement = getMaxMovement().toFloat()
         attacksThisTurn=0
         due = true
+
+        // Wake sleeping units if there's an enemy nearby
+        if(action==Constants.unitActionSleep && currentTile.getTilesInDistance(2).any {
+                    it.militaryUnit!=null && it.militaryUnit!!.civInfo.isAtWarWith(civInfo)
+                })
+            action=null
+
         val tileOwner = getTile().getOwner()
         if(tileOwner!=null && !civInfo.canEnterTiles(tileOwner) && !tileOwner.isCityState()) // if an enemy city expanded onto this tile while I was in it
             movement.teleportToClosestMoveableTile()