diff --git a/core/src/com/unciv/models/gamebasics/Building.kt b/core/src/com/unciv/models/gamebasics/Building.kt
index ea4b700b6a..56289a5124 100644
--- a/core/src/com/unciv/models/gamebasics/Building.kt
+++ b/core/src/com/unciv/models/gamebasics/Building.kt
@@ -184,7 +184,7 @@ class Building : NamedStats(), IConstruction{
         if("Can only be built in coastal cities" in uniques
                 && construction.cityInfo.getCenterTile().neighbors.none { it.baseTerrain=="Coast" })
             return false
-        if (requiredResource != null && civInfo.hasResource(requiredResource!!))
+        if (requiredResource != null && !civInfo.hasResource(requiredResource!!))
             return false