Recursive equals call

Reports recursive equals (==) calls.

In Kotlin, == compares object values by calling equals method under the hood. ===, on the other hand, compares objects by reference.

=== is commonly used in equals method implementation. But === may be mistakenly mixed up with == leading to infinite recursion.

Example:

  class X {
      override fun equals(other: Any?): Boolean {
          if (this == other) return true
          return false
      }
  }

After the quick-fix is applied:

  class X {
      override fun equals(other: Any?): Boolean {
          if (this === other) return true
          return false
      }
  }

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.

RecursiveEqualsCall

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 | Probable bugs

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 RecursiveEqualsCall

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

IntelliJ IDEA 2025.2

Inspection Details
By default bundled with:	IntelliJ IDEA 2025.2, Qodana for JVM 2025.2,

Last modified: 18 September 2025