Redundant semicolon

Reports redundant semicolons (;) that can be safely removed.

Kotlin does not require a semicolon at the end of each statement or expression. The quick-fix is suggested to remove redundant semicolons.

Example:

  val myMap = mapOf("one" to 1, "two" to 2);
  myMap.forEach { (key, value) ->  print("$key -> $value")};

After the quick-fix is applied:

  val myMap = mapOf("one" to 1, "two" to 2)
  myMap.forEach { (key, value) ->  print("$key -> $value")}

There are two cases though where a semicolon is required:

Several statements placed on a single line need to be separated with semicolons:
map.forEach { val (key, value) = it; println("$key -> $value") }
enum classes that also declare properties or functions, require a semicolon after the list of enum constants:
enum class Mode { SILENT, VERBOSE; fun isSilent(): Boolean = this == SILENT }

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

RedundantSemicolon

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | Kotlin | Redundant constructs

Inspection Details
By default bundled with:	IntelliJ IDEA 2024.3, Qodana for JVM 2024.3,
Can be installed with plugin:	Kotlin, 243.26483-IJ

01 April 2025