diff --git a/core/src/com/unciv/models/ruleset/RulesetCache.kt b/core/src/com/unciv/models/ruleset/RulesetCache.kt
index 72d43b33e5..9c998bfc22 100644
--- a/core/src/com/unciv/models/ruleset/RulesetCache.kt
+++ b/core/src/com/unciv/models/ruleset/RulesetCache.kt
@@ -16,9 +16,6 @@ import com.unciv.utils.debug
  * save all of the loaded rulesets somewhere for later use
  *  */
 object RulesetCache : HashMap<String, Ruleset>() {
-    /** Whether mod checking allows untyped uniques - set to `false` once all vanilla uniques are converted! */
-    var modCheckerAllowUntypedUniques = true
-
     /** Similarity below which an untyped unique can be considered a potential misspelling.
      * Roughly corresponds to the fraction of the Unique placeholder text that can be different/misspelled, but with some extra room for [getRelativeTextDistance] idiosyncrasies. */
     var uniqueMisspellingThreshold = 0.15 // Tweak as needed. Simple misspellings seem to be around 0.025, so would mostly be caught by 0.05. IMO 0.1 would be good, but raising to 0.15 also seemed to catch what may be an outdated Unique.
diff --git a/core/src/com/unciv/models/ruleset/validation/RulesetValidator.kt b/core/src/com/unciv/models/ruleset/validation/RulesetValidator.kt
index 4ab4de321c..0e04227f40 100644
--- a/core/src/com/unciv/models/ruleset/validation/RulesetValidator.kt
+++ b/core/src/com/unciv/models/ruleset/validation/RulesetValidator.kt
@@ -755,11 +755,9 @@ class RulesetValidator(val ruleset: Ruleset) {
             if (fixes.isNotEmpty()) return fixes
         }
 
-        if (RulesetCache.modCheckerAllowUntypedUniques) return emptyList()
-
         return listOf(RulesetError(
             "$prefix unique \"${unique.text}\" not found in Unciv's unique types.",
-                RulesetErrorSeverity.WarningOptionsOnly))
+                RulesetErrorSeverity.OK))
     }
 
     private fun isFilteringUniqueAllowed(unique: Unique): Boolean {
diff --git a/core/src/com/unciv/ui/popups/options/DebugTab.kt b/core/src/com/unciv/ui/popups/options/DebugTab.kt
index 193bdefb00..1071d11971 100644
--- a/core/src/com/unciv/ui/popups/options/DebugTab.kt
+++ b/core/src/com/unciv/ui/popups/options/DebugTab.kt
@@ -3,17 +3,17 @@ package com.unciv.ui.popups.options
 import com.badlogic.gdx.scenes.scene2d.ui.Table
 import com.unciv.GUI
 import com.unciv.UncivGame
-import com.unciv.logic.files.UncivFiles
 import com.unciv.logic.files.MapSaver
+import com.unciv.logic.files.UncivFiles
 import com.unciv.models.ruleset.RulesetCache
 import com.unciv.models.ruleset.tile.ResourceType
-import com.unciv.ui.screens.basescreen.BaseScreen
 import com.unciv.ui.components.UncivSlider
 import com.unciv.ui.components.UncivTextField
-import com.unciv.ui.components.input.onClick
 import com.unciv.ui.components.extensions.toCheckBox
 import com.unciv.ui.components.extensions.toLabel
 import com.unciv.ui.components.extensions.toTextButton
+import com.unciv.ui.components.input.onClick
+import com.unciv.ui.screens.basescreen.BaseScreen
 import com.unciv.utils.DebugUtils
 
 fun debugTab(
@@ -80,10 +80,6 @@ fun debugTab(
         BaseScreen.enableSceneDebug = it
     }).colspan(2).row()
 
-    add("Allow untyped Uniques in mod checker".toCheckBox(RulesetCache.modCheckerAllowUntypedUniques) {
-        RulesetCache.modCheckerAllowUntypedUniques = it
-    }).colspan(2).row()
-
     add(Table().apply {
         add("Unique misspelling threshold".toLabel()).left().fillX()
         add(
diff --git a/tests/src/com/unciv/testing/BasicTests.kt b/tests/src/com/unciv/testing/BasicTests.kt
index d09e1cc9e8..bed615928d 100644
--- a/tests/src/com/unciv/testing/BasicTests.kt
+++ b/tests/src/com/unciv/testing/BasicTests.kt
@@ -91,7 +91,6 @@ class BasicTests {
 
     @Test
     fun baseRulesetHasNoBugs() {
-        RulesetCache.modCheckerAllowUntypedUniques = false
         for (baseRuleset in BaseRuleset.values()) {
             val ruleset = RulesetCache[baseRuleset.fullName]!!
             val modCheck = ruleset.checkModLinks()