diff --git a/idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/symbols/KtFirOverrideInfoProvider.kt b/idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/symbols/KtFirOverrideInfoProvider.kt
index 64b88091694..a9e880693fd 100644
--- a/idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/symbols/KtFirOverrideInfoProvider.kt
+++ b/idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/symbols/KtFirOverrideInfoProvider.kt
@@ -15,7 +15,6 @@ import org.jetbrains.kotlin.fir.originalForSubstitutionOverride
 import org.jetbrains.kotlin.fir.resolve.ScopeSession
 import org.jetbrains.kotlin.fir.resolve.SessionHolderImpl
 import org.jetbrains.kotlin.fir.scopes.impl.delegatedWrapperData
-import org.jetbrains.kotlin.fir.symbols.impl.FirClassSymbol
 import org.jetbrains.kotlin.idea.frontend.api.KtAnalysisSession
 import org.jetbrains.kotlin.idea.frontend.api.components.KtOverrideInfoProvider
 import org.jetbrains.kotlin.idea.frontend.api.fir.KtFirAnalysisSession
@@ -50,8 +49,11 @@ class KtFirOverrideInfoProvider(
         return memberSymbol.firRef.withFir { memberFir ->
             if (memberFir !is FirCallableDeclaration) return@withFir null
             parentClassSymbol.firRef.withFir inner@{ parentClassFir ->
-                if (parentClassSymbol !is FirClassSymbol<*>) return@inner null
-                memberFir.symbol.getImplementationStatus(SessionHolderImpl(firAnalysisSession.rootModuleSession, ScopeSession()), parentClassSymbol)
+                if (parentClassFir !is FirClass) return@inner null
+                memberFir.symbol.getImplementationStatus(
+                    SessionHolderImpl(firAnalysisSession.rootModuleSession, ScopeSession()),
+                    parentClassFir.symbol
+                )
             }
         }
     }