diff --git a/core/sig_utils.py b/core/sig_utils.py
index 2fd96b5..38c3b23 100644
--- a/core/sig_utils.py
+++ b/core/sig_utils.py
@@ -109,12 +109,13 @@ def populate_sig_ref_info(sig_ref):
                     # the zeroest corner of the box, then "lat2" and "lng2" provide the other corner. We detect this
                     # and provide a single lat/lon for the centre. Otherwise if we don't have these extra parameters,
                     # just use the single point we have.
-                    if "latitude" in data and "longitude" in data and "lat2" in data and "lng2" in data:
+                    if data.get("latitude") is not None and data.get("longitude") is not None and data.get(
+                            "lat2") is not None and data.get("lng2") is not None:
                         sig_ref.latitude = (float(data["latitude"]) + float(data["lat2"])) / 2.0
                         sig_ref.longitude = (float(data["longitude"]) + float(data["lng2"])) / 2.0
                     else:
-                        sig_ref.latitude = float(data["latitude"]) if "latitude" in data else None
-                        sig_ref.longitude = float(data["longitude"]) if "longitude" in data else None
+                        sig_ref.latitude = float(data["latitude"]) if data.get("latitude") is not None else None
+                        sig_ref.longitude = float(data["longitude"]) if data.get("longitude") is not None else None
                 elif not response.from_cache:
                     logging.warning("Malformed response looking up %s ref %s via GMA", sig, ref_id)
             elif not response.from_cache:
diff --git a/templates/add_spot.html b/templates/add_spot.html
index 91cbe33..11867dc 100644
--- a/templates/add_spot.html
+++ b/templates/add_spot.html
@@ -76,7 +76,7 @@
 
 </div>
 
-<script src="/static/js/add-spot.js?v=1785048685"></script>
+<script src="/static/js/add-spot.js?v=1785049068"></script>
 <script>$(document).ready(function () {
     $("#nav-link-add-spot").addClass("active");
 }); <!-- highlight active page in nav --></script>
diff --git a/templates/alerts.html b/templates/alerts.html
index 61ba018..d8db687 100644
--- a/templates/alerts.html
+++ b/templates/alerts.html
@@ -75,7 +75,7 @@
 
 </div>
 
-<script src="/static/js/alerts.js?v=1785048685"></script>
+<script src="/static/js/alerts.js?v=1785049068"></script>
 <script>$(document).ready(function () {
     $("#nav-link-alerts").addClass("active");
 }); <!-- highlight active page in nav --></script>
diff --git a/templates/bands.html b/templates/bands.html
index 4a3e712..f5d24b5 100644
--- a/templates/bands.html
+++ b/templates/bands.html
@@ -75,8 +75,8 @@
 <script>
     let spotProvidersEnabledByDefault = {% raw json_encode(web_ui_options["spot-providers-enabled-by-default"]) %};
 </script>
-<script src="/static/js/spotsbandsandmap.js?v=1785048685"></script>
-<script src="/static/js/bands.js?v=1785048685"></script>
+<script src="/static/js/spotsbandsandmap.js?v=1785049068"></script>
+<script src="/static/js/bands.js?v=1785049068"></script>
 <script>$(document).ready(function () {
     $("#nav-link-bands").addClass("active");
 }); <!-- highlight active page in nav --></script>
diff --git a/templates/base.html b/templates/base.html
index 66bc487..c828934 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -1,6 +1,6 @@
 {% extends "skeleton.html" %}
 {% block head_extra %}
-<link rel="stylesheet" href="/static/css/style.css?v=1785048685" type="text/css">
+<link rel="stylesheet" href="/static/css/style.css?v=1785049068" type="text/css">
 <link href="/static/vendor/css/bootstrap-5.3.8.min.css" rel="stylesheet">
 <link href="/static/vendor/css/fontawesome-6.7.2.min.css" rel="stylesheet">
 <link href="/static/vendor/css/solid-6.7.2.min.css" rel="stylesheet">
@@ -10,10 +10,10 @@
 <script src="/static/vendor/js/bootstrap-5.3.8.bundle.min.js"></script>
 <script src="/static/vendor/js/tinycolor2-1.6.0.min.js"></script>
 
-<script src="/static/js/utils.js?v=1785048685"></script>
-<script src="/static/js/ui-ham.js?v=1785048685"></script>
-<script src="/static/js/geo.js?v=1785048685"></script>
-<script src="/static/js/common.js?v=1785048685"></script>
+<script src="/static/js/utils.js?v=1785049068"></script>
+<script src="/static/js/ui-ham.js?v=1785049068"></script>
+<script src="/static/js/geo.js?v=1785049068"></script>
+<script src="/static/js/common.js?v=1785049068"></script>
 {% end %}
 {% block body %}
 <div class="container">
diff --git a/templates/conditions.html b/templates/conditions.html
index 06b5f45..4fe2ef7 100644
--- a/templates/conditions.html
+++ b/templates/conditions.html
@@ -284,7 +284,7 @@
 </div>
 
 <script src="/static/vendor/js/chart-4.4.9.umd.min.js"></script>
-<script src="/static/js/conditions.js?v=1785048685"></script>
+<script src="/static/js/conditions.js?v=1785049068"></script>
 <script>$(document).ready(function () {
     $("#nav-link-conditions").addClass("active");
 }); <!-- highlight active page in nav --></script>
diff --git a/templates/map.html b/templates/map.html
index 5eb5524..84d0d6f 100644
--- a/templates/map.html
+++ b/templates/map.html
@@ -108,8 +108,8 @@
 <script>
     let spotProvidersEnabledByDefault = {% raw json_encode(web_ui_options["spot-providers-enabled-by-default"]) %};
 </script>
-<script src="/static/js/spotsbandsandmap.js?v=1785048685"></script>
-<script src="/static/js/map.js?v=1785048685"></script>
+<script src="/static/js/spotsbandsandmap.js?v=1785049068"></script>
+<script src="/static/js/map.js?v=1785049068"></script>
 <script>$(document).ready(function () {
     $("#nav-link-map").addClass("active");
 }); <!-- highlight active page in nav --></script>
diff --git a/templates/spots.html b/templates/spots.html
index deeb2ee..3387b41 100644
--- a/templates/spots.html
+++ b/templates/spots.html
@@ -116,8 +116,8 @@
 <script>
     let spotProvidersEnabledByDefault = {% raw json_encode(web_ui_options["spot-providers-enabled-by-default"]) %};
 </script>
-<script src="/static/js/spotsbandsandmap.js?v=1785048685"></script>
-<script src="/static/js/spots.js?v=1785048685"></script>
+<script src="/static/js/spotsbandsandmap.js?v=1785049068"></script>
+<script src="/static/js/spots.js?v=1785049068"></script>
 <script>$(document).ready(function () {
     $("#nav-link-spots").addClass("active");
 }); <!-- highlight active page in nav --></script>
diff --git a/templates/status.html b/templates/status.html
index a3e4e7f..813e227 100644
--- a/templates/status.html
+++ b/templates/status.html
@@ -59,7 +59,7 @@
     </div>
 </div>
 
-<script src="/static/js/status.js?v=1785048685"></script>
+<script src="/static/js/status.js?v=1785049068"></script>
 <script>
     $(document).ready(function () {
         $("#nav-link-status").addClass("active");