diff --git a/idea/idea-frontend-api/src/org/jetbrains/kotlin/idea/frontend/api/symbols/KtFunctionLikeSymbol.kt b/idea/idea-frontend-api/src/org/jetbrains/kotlin/idea/frontend/api/symbols/KtFunctionLikeSymbol.kt
index 566ab75d224..680ef899c8c 100644
--- a/idea/idea-frontend-api/src/org/jetbrains/kotlin/idea/frontend/api/symbols/KtFunctionLikeSymbol.kt
+++ b/idea/idea-frontend-api/src/org/jetbrains/kotlin/idea/frontend/api/symbols/KtFunctionLikeSymbol.kt
@@ -20,7 +20,7 @@ abstract class KtFunctionSymbol : KtFunctionLikeSymbol(), KtNamedSymbol, KtPossi
     abstract val isOperator: Boolean
     abstract val fqName: FqName?
 
-    abstract override val valueParameters: List<KtSimpleFunctionParameterSymbol>
+    abstract override val valueParameters: List<KtFunctionParameterSymbol>
 }
 
 abstract class KtConstructorSymbol : KtFunctionLikeSymbol() {
diff --git a/idea/idea-frontend-api/src/org/jetbrains/kotlin/idea/frontend/api/symbols/KtVariableLikeSymbol.kt b/idea/idea-frontend-api/src/org/jetbrains/kotlin/idea/frontend/api/symbols/KtVariableLikeSymbol.kt
index 7fe29a679b4..5269f9a8c5f 100644
--- a/idea/idea-frontend-api/src/org/jetbrains/kotlin/idea/frontend/api/symbols/KtVariableLikeSymbol.kt
+++ b/idea/idea-frontend-api/src/org/jetbrains/kotlin/idea/frontend/api/symbols/KtVariableLikeSymbol.kt
@@ -30,7 +30,9 @@ abstract class KtPropertySymbol : KtVariableSymbol(), KtPossibleExtensionSymbol
 
 abstract class KtLocalVariableSymbol : KtVariableSymbol()
 
-abstract class KtSimpleFunctionParameterSymbol : KtParameterSymbol()
+abstract class KtFunctionParameterSymbol : KtParameterSymbol() {
+    abstract val isVararg: Boolean
+}
 
 abstract class KtConstructorParameterSymbol : KtParameterSymbol(), KtNamedSymbol {
     abstract val constructorParameterKind: KtConstructorParameterSymbolKind
diff --git a/idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/symbols/KtFirFunctionValueParameterSymbol.kt b/idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/symbols/KtFirFunctionValueParameterSymbol.kt
index 98c89736f82..3abb00af4b5 100644
--- a/idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/symbols/KtFirFunctionValueParameterSymbol.kt
+++ b/idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/symbols/KtFirFunctionValueParameterSymbol.kt
@@ -13,7 +13,7 @@ import org.jetbrains.kotlin.idea.frontend.api.KtType
 import org.jetbrains.kotlin.idea.frontend.api.fir.KtSymbolByFirBuilder
 import org.jetbrains.kotlin.idea.frontend.api.fir.utils.cached
 import org.jetbrains.kotlin.idea.frontend.api.fir.utils.weakRef
-import org.jetbrains.kotlin.idea.frontend.api.symbols.KtSimpleFunctionParameterSymbol
+import org.jetbrains.kotlin.idea.frontend.api.symbols.KtFunctionParameterSymbol
 import org.jetbrains.kotlin.idea.frontend.api.symbols.KtSymbolKind
 import org.jetbrains.kotlin.idea.frontend.api.withValidityAssertion
 import org.jetbrains.kotlin.name.Name
@@ -22,12 +22,12 @@ internal class KtFirFunctionValueParameterSymbol(
     fir: FirValueParameterImpl,
     override val token: ValidityOwner,
     private val builder: KtSymbolByFirBuilder
-) : KtSimpleFunctionParameterSymbol(),
-    KtFirSymbol<FirValueParameterImpl> {
+) : KtFunctionParameterSymbol(), KtFirSymbol<FirValueParameterImpl> {
     override val fir: FirValueParameterImpl by weakRef(fir)
     override val psi: PsiElement? by cached { fir.findPsi(fir.session) }
 
     override val name: Name get() = withValidityAssertion { fir.name }
+    override val isVararg: Boolean get() = withValidityAssertion { fir.isVararg }
     override val type: KtType by cached { builder.buildKtType(fir.returnTypeRef) }
     override val symbolKind: KtSymbolKind get() = KtSymbolKind.LOCAL
 }
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