diff --git a/entity/Usersettings_entity/entityfields/calmaintimeend/dropDownProcess.js b/entity/Usersettings_entity/entityfields/calmaintimeend/dropDownProcess.js
index 03c7b1f31d5df7f6b61c2c4a243220b779d6aa17..47b14ebf814c49e6af528d73ff0d880b0dd94787 100644
--- a/entity/Usersettings_entity/entityfields/calmaintimeend/dropDownProcess.js
+++ b/entity/Usersettings_entity/entityfields/calmaintimeend/dropDownProcess.js
@@ -12,7 +12,7 @@ for(let h = hourStart; h <= hourEnd; h++) {
         let timestamp = (new Date(1970, 0, 1, h, m)).getTime();
         let displayTime = h.toString().padStart(2, '0') + ":" + m.toString().padStart(2, '0');
         
-        dropdown.push([timestamp, displayTime]);
+        dropdown.push([timestamp.toString(), displayTime]);
     }   
 }
 
diff --git a/entity/Usersettings_entity/entityfields/calmaintimestart/dropDownProcess.js b/entity/Usersettings_entity/entityfields/calmaintimestart/dropDownProcess.js
index 03c7b1f31d5df7f6b61c2c4a243220b779d6aa17..47b14ebf814c49e6af528d73ff0d880b0dd94787 100644
--- a/entity/Usersettings_entity/entityfields/calmaintimestart/dropDownProcess.js
+++ b/entity/Usersettings_entity/entityfields/calmaintimestart/dropDownProcess.js
@@ -12,7 +12,7 @@ for(let h = hourStart; h <= hourEnd; h++) {
         let timestamp = (new Date(1970, 0, 1, h, m)).getTime();
         let displayTime = h.toString().padStart(2, '0') + ":" + m.toString().padStart(2, '0');
         
-        dropdown.push([timestamp, displayTime]);
+        dropdown.push([timestamp.toString(), displayTime]);
     }   
 }