diff --git a/components/ILIAS/Maps/classes/class.ilGoogleMapGUI.php b/components/ILIAS/Maps/classes/class.ilGoogleMapGUI.php
index c3666dcffe72..3cb833948145 100755
--- a/components/ILIAS/Maps/classes/class.ilGoogleMapGUI.php
+++ b/components/ILIAS/Maps/classes/class.ilGoogleMapGUI.php
@@ -1,7 +1,5 @@
 <?php
 
-declare(strict_types=1);
-
 /**
  * This file is part of ILIAS, a powerful learning management system
  * published by ILIAS open source e-Learning e.V.
@@ -18,6 +16,8 @@
  *
  *********************************************************************/
 
+declare(strict_types=1);
+
 /**
  * User interface class for Google Maps
  *
diff --git a/components/ILIAS/Maps/templates/default/tpl.google_map.js b/components/ILIAS/Maps/templates/default/tpl.google_map.js
index 29fff34fa9c6..c3d40ee9870a 100755
--- a/components/ILIAS/Maps/templates/default/tpl.google_map.js
+++ b/components/ILIAS/Maps/templates/default/tpl.google_map.js
@@ -13,27 +13,35 @@
  * https://github.com/ILIAS-eLearning
  */
 
-ilMapData = Array();
-ilMap = Array();
-ilMapOptions = [];
-ilCM = Array();
-ilMapUserMarker = Array();
+window.ilMapData = window.ilMapData || [];
+window.ilMap = window.ilMap || [];
+window.ilMapOptions = window.ilMapOptions || [];
+window.ilCM = window.ilCM || [];
+window.ilMapUserMarker = window.ilMapUserMarker || [];
 ilMapData["{MAP_ID}"] = new Array({LAT},{LONG},{ZOOM},{TYPE_CONTROL},{NAV_CONTROL},{UPDATE_LISTENER},{LARGE_CONTROL},{CENTRAL_MARKER});
 ilMapUserMarker["{MAP_ID}"] = Array();
 <!-- BEGIN user_marker -->
 ilMapUserMarker["{UMAP_ID}"][{CNT}] = new Array({ULAT},{ULONG}, "<div style='width:220px;'><img style='float:right; margin-right:10px;' className='ilUserXXSmall' src='{IMG_USER}'\/><span className='small'>{USER_INFO}<\/span><\/div>");
 <!-- END user_marker -->
 
-if (google.maps)
+var ilMarkerImage = null;
+if (typeof google !== "undefined" && google.maps)
 {
-    var ilMarkerImage = new google.maps.MarkerImage(
-        "./assets/images/standard/icon_mapm.svg",
-        new google.maps.Size(12, 20),
-        new google.maps.Point(0,0),
-        new google.maps.Point(6, 20));
+    // Google Maps still supports legacy `google.maps.Marker`, but `google.maps.MarkerImage`
+    // is an older wrapper API for marker icons. Using the icon as a plain object with
+    // `url`, `scaledSize`, `origin`, and `anchor` passes the same marker configuration in
+    // the format the current marker API expects. This keeps the existing legacy marker
+    // behavior and custom SVG icon, while avoiding the deprecated `MarkerImage` wrapper
+    // that no longer rendered reliably here.
+    ilMarkerImage = {
+        url: "./assets/images/standard/icon_mapm.svg",
+        scaledSize: new google.maps.Size(12, 20),
+        origin: new google.maps.Point(0, 0),
+        anchor: new google.maps.Point(6, 20)
+    };
 }
 
-if (google.maps)
+if (typeof google !== "undefined" && google.maps)
 {
 	ilInitMaps();
 }
@@ -52,7 +60,7 @@ function ilInitMaps()
     for (var i=0;i<obj.length;i++)
     {
         // if it has a class of helpLink
-        if(/ilGoogleMap/.test(obj[i].className))
+        if(/ilGoogleMap/.test(obj[i].className) && ilMapData[obj[i].id] && !ilMap[obj[i].id])
         {
             ilInitMap(obj[i].id, ilMapData[obj[i].id][0], ilMapData[obj[i].id][1],
                 ilMapData[obj[i].id][2], ilMapData[obj[i].id][3], ilMapData[obj[i].id][4],
@@ -76,7 +84,7 @@ function ilInitMap(id, latitude, longitude, zoom, type_control,
         mapTypeControl: type_control,
         scaleControl: true,
         panControl: (nav_control || large_map_control)
-    }
+    };
     var map = new google.maps.Map(document.getElementById(id), mapOptions);
 
     ilGetUserMarkers(id, map);