diff --git a/core/src/com/unciv/ui/overviewscreen/UnitOverviewTable.kt b/core/src/com/unciv/ui/overviewscreen/UnitOverviewTable.kt
index d2774fb2d7..342828e64d 100644
--- a/core/src/com/unciv/ui/overviewscreen/UnitOverviewTable.kt
+++ b/core/src/com/unciv/ui/overviewscreen/UnitOverviewTable.kt
@@ -231,7 +231,7 @@ class UnitOverviewTab(
             // Upgrade column
             if (unit.upgrade.canUpgrade()) {
                 val unitAction = UnitActionsUpgrade.getUpgradeAction(unit)
-                val enable = unitAction?.action != null
+                val enable = unitAction?.action != null && viewingPlayer.isCurrentPlayer()
                 val upgradeIcon = ImageGetter.getUnitIcon(unit.upgrade.getUnitToUpgradeTo().name,
                     if (enable) Color.GREEN else Color.GREEN.darken(0.5f))
                 if (enable) upgradeIcon.onClick {