diff --git a/frontend/src/components/forms/TimeOffsetForm.tsx b/frontend/src/components/forms/TimeOffsetForm.tsx
index cdd095bdc..132539bea 100644
--- a/frontend/src/components/forms/TimeOffsetForm.tsx
+++ b/frontend/src/components/forms/TimeOffsetForm.tsx
@@ -47,7 +47,12 @@ const TimeOffsetForm: FunctionComponent<Props> = ({ selections, onSubmit }) => {
   return (
     <form
       onSubmit={form.onSubmit(({ positive, hour, min, sec, ms }) => {
-        const action = convertToAction(hour, min, sec, ms);
+        let action: string;
+        if (positive) {
+          action = convertToAction(hour, min, sec, ms);
+        } else {
+          action = convertToAction(-hour, -min, -sec, -ms);
+        }
 
         selections.forEach((s) =>
           task.create(s.path, TaskName, mutateAsync, {