diff --git a/src/core.js b/src/core.js
index 7dd2c11b9..b2e947202 100644
--- a/src/core.js
+++ b/src/core.js
@@ -272,7 +272,7 @@ function scheduleBegin() {
 	if ( defined.setTimeout ) {
 		setTimeout( function() {
 			begin();
-		}, 13 );
+		} );
 	} else {
 		begin();
 	}
diff --git a/src/core/processing-queue.js b/src/core/processing-queue.js
index c7f270f2d..18f59ad0d 100644
--- a/src/core/processing-queue.js
+++ b/src/core/processing-queue.js
@@ -40,7 +40,7 @@ function advance() {
 
 			config.queue.shift()();
 		} else {
-			setTimeout( advance, 13 );
+			setTimeout( advance );
 			break;
 		}
 	}
diff --git a/src/test.js b/src/test.js
index 273832689..68463f1fd 100644
--- a/src/test.js
+++ b/src/test.js
@@ -789,7 +789,7 @@ function internalStart( test ) {
 			}
 
 			begin();
-		}, 13 );
+		} );
 	} else {
 		begin();
 	}
diff --git a/test/main/promise.js b/test/main/promise.js
index dead1b6d4..c762bbce6 100644
--- a/test/main/promise.js
+++ b/test/main/promise.js
@@ -13,7 +13,7 @@ function createMockPromise( assert, reject, value ) {
 				return reject ?
 					rejectedCallback.call( thenable, value ) :
 					fulfilledCallback.call( thenable, value );
-			}, 13 );
+			} );
 		}
 	};
 	return thenable;