diff --git a/src/formatUnits.js b/src/formatUnits.js
index 316c9990..1a56fb1a 100644
--- a/src/formatUnits.js
+++ b/src/formatUnits.js
@@ -169,6 +169,13 @@ register_hook('options_form', def => {
   }
 })
 
+register_hook('options_orig_data', data => {
+  data.formatUnitsSystem = settings.system
+  data.formatUnitsCoordFormat = settings.coordFormat
+  data.formatUnitsCoordSpacer = settings.coordSpacer
+  data.formatUnitsSpeed = settings.speed
+})
+
 register_hook('options_save', data => {
   let old = JSON.stringify(settings)
 
diff --git a/src/options.js b/src/options.js
index 564fa5b3..67b39713 100644
--- a/src/options.js
+++ b/src/options.js
@@ -35,6 +35,16 @@ moduleOptions.open = function () {
   var dom = document.getElementById('contentOptions')
   dom.innerHTML = ''
 
+  let orig_options = {
+    debug: false
+  }
+  call_hooks('options_orig_data', orig_options)
+  for (let k in orig_options) {
+    if (!(k in options)) {
+      options[k] = orig_options[k]
+    }
+  }
+
   optionsForm.set_data(options)
 
   optionsFormEl = document.createElement('form')