Index: sites/all/modules/gmap/gmap_location.module
===================================================================
--- sites/all/modules/gmap/gmap_location.module	(revision 742)
+++ sites/all/modules/gmap/gmap_location.module	(working copy)
@@ -604,6 +604,7 @@
 function gmap_location_block_view($nid) {
   $block = array();
   $node = node_load($nid);
+
   if ($node->locations) {
     $markertypes = variable_get('gmap_node_markers', array());
     $markers = array();
@@ -627,6 +628,9 @@
       $map = gmap_parse_macro($macro);
       $map['markers'] = $markers;
       // @@@
+      // Center map on only marker.
+      $map['latitude'] = $map['markers'][0]['latitude'];
+      $map['longitude'] = $map['markers'][0]['longitude'];
       $map['behavior']['autozoom'] = true;
       $map['behavior']['notype'] = true;
       $map['controltype'] = 'None';