diff --git a/single.php b/single.php
index c8c94ed..a61a41c 100644
--- a/single.php
+++ b/single.php
@@ -116,8 +116,8 @@
 										bounds.extend(marker.getPosition());
 									}
 									this.map.fitBounds(bounds);
-									if(map.getZoom() > 15)
-										map.setZoom(15);
+									if(this.map.getZoom() > 15)
+										this.map.setZoom(15);
 								}
 							</script>
 						</div>