diff --git a/apps/OpenEnergyMonitor/myheatpump/myheatpump.js b/apps/OpenEnergyMonitor/myheatpump/myheatpump.js
index 7fa6342c..20115fe6 100644
--- a/apps/OpenEnergyMonitor/myheatpump/myheatpump.js
+++ b/apps/OpenEnergyMonitor/myheatpump/myheatpump.js
@@ -365,7 +365,7 @@ $('#placeholder').bind("plothover", function (event, pos, item) {
                 
                 var outside_temp_str = "";
                 if (feeds["heatpump_outsideT"]!=undefined) {
-                    if (data["heatpump_outsideT_daily"].length && data["heatpump_outsideT_daily"][z]!=undefined) {
+                    if (data["heatpump_outsideT_daily"]!=undefined && data["heatpump_outsideT_daily"].length && data["heatpump_outsideT_daily"][z]!=undefined) {
                         let outsideT = data["heatpump_outsideT_daily"][z][1];
                         if (outsideT!=null) {
                             outside_temp_str = "Outside: "+outsideT.toFixed(1)+"°C<br>";
diff --git a/apps/OpenEnergyMonitor/myheatpump/myheatpump.php b/apps/OpenEnergyMonitor/myheatpump/myheatpump.php
index febb2f70..7ac418f5 100644
--- a/apps/OpenEnergyMonitor/myheatpump/myheatpump.php
+++ b/apps/OpenEnergyMonitor/myheatpump/myheatpump.php
@@ -269,4 +269,4 @@
 config.name = "<?php echo $name; ?>";
 config.db = <?php echo json_encode($config); ?>;
 </script>
-<script type="text/javascript" src="<?php echo $path; ?>Modules/app/apps/OpenEnergyMonitor/myheatpump/myheatpump.js?v=69"></script>
+<script type="text/javascript" src="<?php echo $path; ?>Modules/app/apps/OpenEnergyMonitor/myheatpump/myheatpump.js?v=70"></script>