diff --git a/src/__tests__/helpers/setTaskPriority.test.ts b/src/__tests__/helpers/setTaskPriority.test.ts
index c254a46..02610b7 100644
--- a/src/__tests__/helpers/setTaskPriority.test.ts
+++ b/src/__tests__/helpers/setTaskPriority.test.ts
@@ -20,9 +20,9 @@ describe('setTaskPriority', () => {
     expect(task.t_priority).toBe(3);
   });
 
-  it('should throw error if t_priority is not set', () => {
+  it('should retur null if t_priority is not set', () => {
     const task = {};
-    expect(() => setTaskPriority(task as Task)).toThrowError('Invalid priority. Must be "low", "medium", or "high"');
+    expect(setTaskPriority(task as Task)).toBeUndefined();
   });
 
   it('should not modify task priority if t_priority is not "low", "medium", or "high"', () => {
diff --git a/src/helpers/setTaskPriority.ts b/src/helpers/setTaskPriority.ts
index 9b51caa..08dc887 100644
--- a/src/helpers/setTaskPriority.ts
+++ b/src/helpers/setTaskPriority.ts
@@ -3,13 +3,11 @@ import Task from './../types/Task.type';
  * Sets the priority of the task from string to a number.
  */
 const setTaskPriority = (task: Task) => {
-  const err = Error('Invalid priority. Must be "low", "medium", or "high"');
-  if (!task?.t_priority) throw err;
-
+  if (!task.t_priority) return;
   if (task.t_priority === 'low') task.t_priority = 1;
   else if (task.t_priority === 'medium') task.t_priority = 2;
   else if (task.t_priority === 'high') task.t_priority = 3;
-  else throw err;
+  else throw Error('Invalid priority. Must be "low", "medium", or "high"');
 };
 
 export default setTaskPriority;