diff --git a/libraries/stdlib/src/kotlin/util/Standard.kt b/libraries/stdlib/src/kotlin/util/Standard.kt
index 7e3113787cb..c8d7c86ffa6 100644
--- a/libraries/stdlib/src/kotlin/util/Standard.kt
+++ b/libraries/stdlib/src/kotlin/util/Standard.kt
@@ -22,26 +22,26 @@ public fun TODO(reason: String): Nothing = throw NotImplementedError("An operati
 
 
 /**
- * Calls the specified function [f] and returns its result.
+ * Calls the specified function [block] and returns its result.
  */
-public inline fun <R> run(f: () -> R): R = f()
+public inline fun <R> run(block: () -> R): R = block()
 
 /**
- * Calls the specified function [f] with `this` value as its receiver and returns its result.
+ * Calls the specified function [block] with `this` value as its receiver and returns its result.
  */
-public inline fun <T, R> T.run(f: T.() -> R): R = f()
+public inline fun <T, R> T.run(block: T.() -> R): R = block()
 
 /**
- * Calls the specified function [f] with the given [receiver] as its receiver and returns its result.
+ * Calls the specified function [block] with the given [receiver] as its receiver and returns its result.
  */
-public inline fun <T, R> with(receiver: T, f: T.() -> R): R = receiver.f()
+public inline fun <T, R> with(receiver: T, block: T.() -> R): R = receiver.block()
 
 /**
- * Calls the specified function [f] with `this` value as its receiver and returns `this` value.
+ * Calls the specified function [block] with `this` value as its receiver and returns `this` value.
  */
-public inline fun <T> T.apply(f: T.() -> Unit): T { f(); return this }
+public inline fun <T> T.apply(block: T.() -> Unit): T { block(); return this }
 
 /**
- * Calls the specified function [f] with `this` value as its argument and returns its result.
+ * Calls the specified function [block] with `this` value as its argument and returns its result.
  */
-public inline fun <T, R> T.let(f: (T) -> R): R = f(this)
+public inline fun <T, R> T.let(block: (T) -> R): R = block(this)