diff --git a/About/ModSync.xml b/About/ModSync.xml
index 50803ab..4666643 100644
--- a/About/ModSync.xml
+++ b/About/ModSync.xml
@@ -2,11 +2,11 @@
 <ModSyncNinjaData>
   <ID>52eabdf5-040a-4cf6-a754-2264a68e2712</ID>
   <ModName>BetterMiniMap</ModName>
-  <Version>0.19.2</Version>
+  <Version>0.19.3</Version>
   <SaveBreaking>False</SaveBreaking>
   <Host name="Direct">
     <AboutUri>https://raw.githubusercontent.com/RimWorld-CCL-Reborn/BetterMiniMap/master/About/About.xml</AboutUri>
     <ModSyncUri>https://raw.githubusercontent.com/RimWorld-CCL-Reborn/BetterMiniMap/master/About/ModSync.xml</ModSyncUri>
-    <DownloadUri>https://github.com/RimWorld-CCL-Reborn/BetterMiniMap/releases/tag/v0.19.2</DownloadUri>
+    <DownloadUri>https://github.com/RimWorld-CCL-Reborn/BetterMiniMap/releases/tag/v0.19.3</DownloadUri>
   </Host>
 </ModSyncNinjaData>
\ No newline at end of file
diff --git a/Assemblies/BetterMiniMap.dll b/Assemblies/BetterMiniMap.dll
index f0f603d..5cded0c 100644
Binary files a/Assemblies/BetterMiniMap.dll and b/Assemblies/BetterMiniMap.dll differ
diff --git a/Defs/OverlayDefs.xml b/Defs/OverlayDefs.xml
index 444181f..ceff102 100644
--- a/Defs/OverlayDefs.xml
+++ b/Defs/OverlayDefs.xml
@@ -178,7 +178,7 @@
     <label>Fires</label>
     <priority>975</priority>
     <description>This overlay shows any crashed ships that have landed on the map</description>
-    <disabled>true</disabled>
+    <visible>false</visible>
     <overlayClass>BetterMiniMap.Overlays.ThingOverlay</overlayClass>
     <updatePeriod>360</updatePeriod>
     <requestGroup>Fire</requestGroup> <!-- returns all -->
diff --git a/Source/BetterMiniMap/MiniMapWindow.cs b/Source/BetterMiniMap/MiniMapWindow.cs
index faf9e0f..705e703 100644
--- a/Source/BetterMiniMap/MiniMapWindow.cs
+++ b/Source/BetterMiniMap/MiniMapWindow.cs
@@ -16,7 +16,7 @@ internal class MiniMapWindow : Window, IExposable
         private const int defaultMargin = 8;
         private const float scrollWheelZoomRate = 0.015f;
 
-        private List<Overlay> overlays;
+        private readonly List<Overlay> overlays;
 
         private int tileHash = 0;
 
diff --git a/Source/BetterMiniMap/OverlayDef.cs b/Source/BetterMiniMap/OverlayDef.cs
index 11aa678..6f0f75c 100644
--- a/Source/BetterMiniMap/OverlayDef.cs
+++ b/Source/BetterMiniMap/OverlayDef.cs
@@ -45,7 +45,7 @@ public class OverlayDef : Def
         public int updatePeriod;
         public List<Selector> selectors;
         public IndicatorMappings indicatorMappings;
-        public bool disabled;
+        public bool visible = true;
         public ThingRequestGroup requestGroup; // should be not null for ThingOverlay
         public int priority = 0;
  
@@ -69,9 +69,9 @@ public void LoadDataFromXmlCustom(XmlNode xmlRoot)
             if (node != null)
                 this.priority = Verse.DirectXmlToObject.ObjectFromXml<int>(node, true);
 
-            node = xmlRoot.SelectSingleNode("disabled");
+            node = xmlRoot.SelectSingleNode("visible");
             if (node != null)
-                this.disabled = Verse.DirectXmlToObject.ObjectFromXml<bool>(node, true);
+                this.visible = Verse.DirectXmlToObject.ObjectFromXml<bool>(node, true);
 
             node = xmlRoot.SelectSingleNode("selectors");
             if (this.ValidateClasses(node))
diff --git a/Source/BetterMiniMap/OverlayManager.cs b/Source/BetterMiniMap/OverlayManager.cs
index b149555..238dd2e 100644
--- a/Source/BetterMiniMap/OverlayManager.cs
+++ b/Source/BetterMiniMap/OverlayManager.cs
@@ -39,7 +39,7 @@ static OverlayManager()
 
                 Log.Message($"OverlayManager.cctor: {def.defName} -> {def.disabled}");
 #endif
-                Overlay overlay = (Overlay)Activator.CreateInstance(def.overlayClass, new object[] {def, !def.disabled});
+                Overlay overlay = (Overlay)Activator.CreateInstance(def.overlayClass, new object[] {def, def.visible});
                 OverlayManager.DefOverlays.Add(overlay);
             }
             // add tracking for settings