diff --git a/calculator/test.js b/calculator/test.js
index 7aac20b..ca7246d 100644
--- a/calculator/test.js
+++ b/calculator/test.js
@@ -547,17 +547,17 @@ test('Trig functions with Pi (rad)', () => {
   assert.strictEqual(scientificOperators.angleMode.val, 'rad');
 
   press('p');
-  press('sin');
+  buttonPress('sin');
   checkDisplay(0); // Math.sin(Math.PI) is ~0, calculator snaps to 0
   press('R'); press('R');
 
   press('p');
-  press('cos');
+  buttonPress('cos');
   checkDisplay(-1);
   press('R'); press('R');
 
   press('p');
-  press('tan');
+  buttonPress('tan');
   checkDisplay(0); // Math.tan(Math.PI) is ~0, calculator snaps to 0
 
   buttonPress('angleMode'); // switch back to DEG