diff --git a/app/controllers/admin/configs_controller.rb b/app/controllers/admin/configs_controller.rb
index 500c1b870..adc1586c9 100644
--- a/app/controllers/admin/configs_controller.rb
+++ b/app/controllers/admin/configs_controller.rb
@@ -43,11 +43,12 @@ def parse_recurring_selects!(config)
     for k in %i[pickup boxfill ends] do
       if config[k]
         # allow clearing it using dummy value '{}' ('' would break recurring_select)
-        if config[k][:recurr].present? && config[k][:recurr] != '{}'
+        if config[k][:recurr].present? && config[k][:recurr] != '{}' && !config[k][:recurr].nil?
           config[k][:recurr] = ActiveSupport::JSON.decode(config[k][:recurr])
-          config[k][:recurr] = FoodsoftDateUtil.rule_from(config[k][:recurr]).to_ical if config[k][:recurr]
+          date = FoodsoftDateUtil.rule_from(config[k][:recurr])
+          config[k][:recurr] = date.to_ical if date
         else
-          config[k] = nil
+          config[k][:recurr] = ''
         end
       end
     end
diff --git a/app/lib/foodsoft_date_util.rb b/app/lib/foodsoft_date_util.rb
index 38dbc6be4..509f25e2b 100644
--- a/app/lib/foodsoft_date_util.rb
+++ b/app/lib/foodsoft_date_util.rb
@@ -24,6 +24,8 @@ def self.rule_from(rule)
       IceCube::Rule.from_ical(rule)
     when Hash
       IceCube::Rule.from_hash(rule)
+    when ActionController::Parameters
+      IceCube::Rule.from_hash(rule.to_hash)
     else
       rule
     end