diff --git a/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/declaration/FirPrimaryConstructorSuperTypeChecker.kt b/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/declaration/FirPrimaryConstructorSuperTypeChecker.kt
index 3e8324ea541..53a53bb431f 100644
--- a/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/declaration/FirPrimaryConstructorSuperTypeChecker.kt
+++ b/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/declaration/FirPrimaryConstructorSuperTypeChecker.kt
@@ -25,6 +25,12 @@ import org.jetbrains.kotlin.utils.addToStdlib.lastIsInstanceOrNull
 object FirPrimaryConstructorSuperTypeChecker : FirRegularClassChecker() {
     override fun check(declaration: FirRegularClass, context: CheckerContext, reporter: DiagnosticReporter) {
         if (declaration.isInterface) {
+            for (superTypeRef in declaration.superTypeRefs) {
+                val source = superTypeRef.source ?: continue
+                if (source.treeStructure.getParent(source.lighterASTNode)?.tokenType == KtNodeTypes.CONSTRUCTOR_CALLEE) {
+                    reporter.reportOn(source, FirErrors.SUPERTYPE_INITIALIZED_IN_INTERFACE, context)
+                }
+            }
             return
         }
 
diff --git a/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/declaration/FirSupertypeInitializedInInterfaceChecker.kt b/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/declaration/FirSupertypeInitializedInInterfaceChecker.kt
deleted file mode 100644
index a09f7132e4a..00000000000
--- a/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/declaration/FirSupertypeInitializedInInterfaceChecker.kt
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
- * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
- */
-
-package org.jetbrains.kotlin.fir.analysis.checkers.declaration
-
-import org.jetbrains.kotlin.KtNodeTypes
-import org.jetbrains.kotlin.fir.analysis.checkers.context.CheckerContext
-import org.jetbrains.kotlin.fir.analysis.diagnostics.DiagnosticReporter
-import org.jetbrains.kotlin.fir.analysis.diagnostics.FirErrors
-import org.jetbrains.kotlin.fir.analysis.diagnostics.reportOn
-import org.jetbrains.kotlin.fir.declarations.FirRegularClass
-import org.jetbrains.kotlin.fir.declarations.isInterface
-
-object FirSupertypeInitializedInInterfaceChecker : FirRegularClassChecker() {
-    override fun check(declaration: FirRegularClass, context: CheckerContext, reporter: DiagnosticReporter) {
-        if (!declaration.isInterface) {
-            return
-        }
-
-        for (superTypeRef in declaration.superTypeRefs) {
-            val source = superTypeRef.source ?: continue
-            if (source.treeStructure.getParent(source.lighterASTNode)?.tokenType == KtNodeTypes.CONSTRUCTOR_CALLEE) {
-                reporter.reportOn(source, FirErrors.SUPERTYPE_INITIALIZED_IN_INTERFACE, context)
-            }
-        }
-    }
-}
diff --git a/compiler/fir/entrypoint/src/org/jetbrains/kotlin/fir/checkers/CommonDeclarationCheckers.kt b/compiler/fir/entrypoint/src/org/jetbrains/kotlin/fir/checkers/CommonDeclarationCheckers.kt
index a8e9d63bb48..b29a773450c 100644
--- a/compiler/fir/entrypoint/src/org/jetbrains/kotlin/fir/checkers/CommonDeclarationCheckers.kt
+++ b/compiler/fir/entrypoint/src/org/jetbrains/kotlin/fir/checkers/CommonDeclarationCheckers.kt
@@ -58,7 +58,6 @@ object CommonDeclarationCheckers : DeclarationCheckers() {
         FirManyCompanionObjectsChecker,
         FirMethodOfAnyImplementedInInterfaceChecker,
         FirDataClassPrimaryConstructorChecker,
-        FirSupertypeInitializedInInterfaceChecker,
         FirPrimaryConstructorSuperTypeChecker,
         FirTypeParametersInObjectChecker,
         FirMemberFunctionsChecker,