diff --git a/src/test.js b/src/test.js
index 6f25b2049..273832689 100644
--- a/src/test.js
+++ b/src/test.js
@@ -410,7 +410,7 @@ Test.prototype = {
 
 	pushResult: function( resultInfo ) {
 		if ( this !== config.current ) {
-			throw new Error( "Assertion occured after test had finished." );
+			throw new Error( "Assertion occurred after test had finished." );
 		}
 
 		// Destructure of resultInfo = { result, actual, expected, message, negative }
diff --git a/test/main/assert.js b/test/main/assert.js
index 43a2c2a25..ed5c166a1 100644
--- a/test/main/assert.js
+++ b/test/main/assert.js
@@ -405,6 +405,6 @@ QUnit.test( "throws", function( assert ) {
 		assert.expect( 1 );
 		assert.throws( function() {
 			previousTestAssert.ok( true );
-		}, /Assertion occured after test had finished/ );
+		}, /Assertion occurred after test had finished/ );
 	} );
 }() );