diff --git a/android/assets/jsons/Civ V - Vanilla/TileImprovements.json b/android/assets/jsons/Civ V - Vanilla/TileImprovements.json
index f3d904400c..e434485196 100644
--- a/android/assets/jsons/Civ V - Vanilla/TileImprovements.json	
+++ b/android/assets/jsons/Civ V - Vanilla/TileImprovements.json	
@@ -52,6 +52,7 @@
 		"terrainsCanBeBuiltOn": ["Coast"],
 		"turnsToBuild": 9,
 		"techRequired": "Biology",
+		"uniques": ["Cannot be built on [Coast] tiles until [Refrigeration] is discovered"],
 		"shortcutKey": "W"
 	},
 	{
diff --git a/core/src/com/unciv/logic/map/TileInfo.kt b/core/src/com/unciv/logic/map/TileInfo.kt
index 4a06b9669b..0f0c50f495 100644
--- a/core/src/com/unciv/logic/map/TileInfo.kt
+++ b/core/src/com/unciv/logic/map/TileInfo.kt
@@ -387,6 +387,10 @@ open class TileInfo {
             improvement.uniqueObjects.any {
                 it.placeholderText == "Obsolete with []" && civInfo.tech.isResearched(it.params[0])
             } -> return false
+            improvement.uniqueObjects.any {
+                it.placeholderText == "Cannot be built on [] tiles until [] is discovered" &&
+                matchesTerrainFilter(it.params[0]) && !civInfo.tech.isResearched(it.params[1])
+            } -> false
             else -> canImprovementBeBuiltHere(improvement, hasViewableResource(civInfo))
         }
     }