diff --git a/core/src/com/unciv/logic/GameInfo.kt b/core/src/com/unciv/logic/GameInfo.kt
index bc6fb1e76f..0932f0326f 100644
--- a/core/src/com/unciv/logic/GameInfo.kt
+++ b/core/src/com/unciv/logic/GameInfo.kt
@@ -331,6 +331,8 @@ class GameInfo {
     // So we remove them so the game doesn't crash when it tries to access them.
     private fun removeMissingModReferences() {
         for (tile in tileMap.values) {
+            if (tile.terrainFeature!=null && !ruleSet.terrains.containsKey(tile.terrainFeature!!))
+                tile.terrainFeature = null
             if (tile.resource != null && !ruleSet.tileResources.containsKey(tile.resource!!))
                 tile.resource = null
             if (tile.improvement != null && !ruleSet.tileImprovements.containsKey(tile.improvement!!)