diff --git a/app/assets/stylesheets/common.scss b/app/assets/stylesheets/common.scss
index c5e2d14b15..c1e71cc2d7 100644
--- a/app/assets/stylesheets/common.scss
+++ b/app/assets/stylesheets/common.scss
@@ -9,6 +9,7 @@
 
 body {
   font-size: $typeheight;
+  --dark-mode-map-filter: brightness(.8);
 }
 
 time[title] {
@@ -505,9 +506,13 @@ body.small-nav {
 }
 
 @include color-mode(dark) {
-  .leaflet-tile-container .leaflet-tile,
+  .leaflet-tile-container,
   .mapkey-table-entry td:first-child > * {
-    filter: brightness(.8);
+    filter: var(--dark-mode-map-filter);
+  }
+
+  .leaflet-tile-container .leaflet-tile {
+    filter: none;
   }
 
   .leaflet-container .leaflet-control-attribution a {