diff --git a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/DataClassMembersGenerator.kt b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/DataClassMembersGenerator.kt
index 1cd31fcf5f2..820ee30493e 100644
--- a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/DataClassMembersGenerator.kt
+++ b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/DataClassMembersGenerator.kt
@@ -7,9 +7,7 @@ package org.jetbrains.kotlin.fir.backend.generators
 
 import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.fir.COPY_NAME
-import org.jetbrains.kotlin.fir.EQUALS_NAME
 import org.jetbrains.kotlin.fir.HASHCODE_NAME
-import org.jetbrains.kotlin.fir.TOSTRING_NAME
 import org.jetbrains.kotlin.fir.backend.Fir2IrComponents
 import org.jetbrains.kotlin.fir.backend.FirMetadataSource
 import org.jetbrains.kotlin.fir.backend.declareThisReceiverParameter
@@ -45,6 +43,8 @@ import org.jetbrains.kotlin.ir.types.classifierOrNull
 import org.jetbrains.kotlin.ir.util.*
 import org.jetbrains.kotlin.ir.util.DataClassMembersGenerator
 import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.util.OperatorNameConventions.EQUALS
+import org.jetbrains.kotlin.util.OperatorNameConventions.TO_STRING
 
 /**
  * A generator that generates synthetic members of data class as well as part of inline class.
@@ -170,9 +170,9 @@ class DataClassMembersGenerator(val components: Fir2IrComponents) {
                     returnTypeRef.toIrType(components.typeConverter) == components.irBuiltIns.stringType
 
         private val FirSimpleFunction.matchesDataClassSyntheticMemberSignatures: Boolean
-            get() = (this.name == EQUALS_NAME && matchesEqualsSignature) ||
+            get() = (this.name == EQUALS && matchesEqualsSignature) ||
                     (this.name == HASHCODE_NAME && matchesHashCodeSignature) ||
-                    (this.name == TOSTRING_NAME && matchesToStringSignature)
+                    (this.name == TO_STRING && matchesToStringSignature)
 
         fun generate(klass: FirClass<*>): List<FirDeclaration> {
             val propertyParametersCount = irClass.primaryConstructor?.explicitParameters?.size ?: 0
@@ -194,7 +194,7 @@ class DataClassMembersGenerator(val components: Fir2IrComponents) {
             val contributedFunctionsInSupertypes =
                 @OptIn(ExperimentalStdlibApi::class)
                 buildMap<Name, FirSimpleFunction> {
-                    for (name in listOf(EQUALS_NAME, HASHCODE_NAME, TOSTRING_NAME)) {
+                    for (name in listOf(EQUALS, HASHCODE_NAME, TO_STRING)) {
                         klass.unsubstitutedScope(
                             components.session,
                             components.scopeSession,
@@ -213,12 +213,12 @@ class DataClassMembersGenerator(val components: Fir2IrComponents) {
                 return declaration.modality != Modality.FINAL
             }
 
-            if (!contributedFunctionsInThisType.contains(EQUALS_NAME) &&
-                isOverridableDeclaration(EQUALS_NAME)
+            if (!contributedFunctionsInThisType.contains(EQUALS) &&
+                isOverridableDeclaration(EQUALS)
             ) {
-                result.add(contributedFunctionsInSupertypes.getValue(EQUALS_NAME))
+                result.add(contributedFunctionsInSupertypes.getValue(EQUALS))
                 val equalsFunction = createSyntheticIrFunction(
-                    EQUALS_NAME,
+                    EQUALS,
                     components.irBuiltIns.booleanType,
                     otherParameterNeeded = true
                 )
@@ -238,12 +238,12 @@ class DataClassMembersGenerator(val components: Fir2IrComponents) {
                 irClass.declarations.add(hashCodeFunction)
             }
 
-            if (!contributedFunctionsInThisType.contains(TOSTRING_NAME) &&
-                isOverridableDeclaration(TOSTRING_NAME)
+            if (!contributedFunctionsInThisType.contains(TO_STRING) &&
+                isOverridableDeclaration(TO_STRING)
             ) {
-                result.add(contributedFunctionsInSupertypes.getValue(TOSTRING_NAME))
+                result.add(contributedFunctionsInSupertypes.getValue(TO_STRING))
                 val toStringFunction = createSyntheticIrFunction(
-                    TOSTRING_NAME,
+                    TO_STRING,
                     components.irBuiltIns.stringType,
                 )
                 irDataClassMembersGenerator.generateToStringMethod(toStringFunction, properties)
diff --git a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/DefaultNames.kt b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/DefaultNames.kt
index e345ee83951..0789bbf6ac6 100644
--- a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/DefaultNames.kt
+++ b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/DefaultNames.kt
@@ -13,6 +13,4 @@ val CONSTRUCTOR_NAME = Name.special("<init>")
 
 // Data class synthetic members
 val COPY_NAME = Name.identifier("copy")
-val EQUALS_NAME = Name.identifier("equals")
 val HASHCODE_NAME = Name.identifier("hashCode")
-val TOSTRING_NAME = Name.identifier("toString")