diff --git a/packages/mermaid/src/diagrams/gantt/parser/gantt.spec.js b/packages/mermaid/src/diagrams/gantt/parser/gantt.spec.js
index 6c1f2e2ca..e7ce1ffa4 100644
--- a/packages/mermaid/src/diagrams/gantt/parser/gantt.spec.js
+++ b/packages/mermaid/src/diagrams/gantt/parser/gantt.spec.js
@@ -181,32 +181,11 @@ row2`;
     expect(ganttDb.getAccDescription()).toBe(expectedAccDescription);
   });
 
-  it('should allow for setting the starting weekday to monday for tick intervals', function () {
-    parser.parse('gantt\nweekday monday');
-    expect(ganttDb.getWeekday()).toBe('monday');
-  });
-  it('should allow for setting the starting weekday to tuesday for tick intervals', function () {
-    parser.parse('gantt\nweekday tuesday');
-    expect(ganttDb.getWeekday()).toBe('tuesday');
-  });
-  it('should allow for setting the starting weekday to wednesday for tick intervals', function () {
-    parser.parse('gantt\nweekday wednesday');
-    expect(ganttDb.getWeekday()).toBe('wednesday');
-  });
-  it('should allow for setting the starting weekday to thursday for tick intervals', function () {
-    parser.parse('gantt\nweekday thursday');
-    expect(ganttDb.getWeekday()).toBe('thursday');
-  });
-  it('should allow for setting the starting weekday to friday for tick intervals', function () {
-    parser.parse('gantt\nweekday friday');
-    expect(ganttDb.getWeekday()).toBe('friday');
-  });
-  it('should allow for setting the starting weekday to saturday for tick intervals', function () {
-    parser.parse('gantt\nweekday saturday');
-    expect(ganttDb.getWeekday()).toBe('saturday');
-  });
-  it('should allow for setting the starting weekday to sunday for tick intervals', function () {
-    parser.parse('gantt\nweekday sunday');
-    expect(ganttDb.getWeekday()).toBe('sunday');
-  });
+  it.each(['monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday', 'sunday'])(
+    'should allow for setting the starting weekday to %s for tick interval',
+    (day) => {
+      parser.parse(`gantt\nweekday ${day}`);
+      expect(ganttDb.getWeekday()).toBe(day);
+    }
+  );
 });