Call of 'toString' could be replaced with string template

Reports toString function calls that can be replaced with a string template.

Using string templates makes your code simpler.

The quick-fix replaces toString with a string template.

Example:

  fun test(): String {
      val x = 1
      return x.toString()
  }

After the quick-fix is applied:

  fun test(): String {
      val x = 1
      return "$x"
  }

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.

ReplaceToStringWithStringTemplate

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 | Style issues

Inspection ID: ReplaceToStringWithStringTemplate

Suppressing Inspection

You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:

//noinspection ReplaceToStringWithStringTemplate

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

IntelliJ IDEA 2025.3

Inspection Details
By default bundled with:	IntelliJ IDEA 2025.3, Qodana for JVM 2025.3,

Last modified: 03 December 2025