diff --git a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/CallAndReferenceGenerator.kt b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/CallAndReferenceGenerator.kt
index 6851e023139..d533c669db0 100644
--- a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/CallAndReferenceGenerator.kt
+++ b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/CallAndReferenceGenerator.kt
@@ -529,7 +529,7 @@ class CallAndReferenceGenerator(
     }
 
     private fun IrMemberAccessExpression<*>.applyArgumentsWithReorderingIfNeeded(
-        argumentMapping: LinkedHashMap<FirExpression, FirValueParameter>,
+        argumentMapping: Map<FirExpression, FirValueParameter>,
         valueParameters: List<FirValueParameter>,
         substitutor: ConeSubstitutor,
         annotationMode: Boolean
diff --git a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/expressions/FirExpressionUtil.kt b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/expressions/FirExpressionUtil.kt
index f6446d6fbe9..0c0b9dcc1c8 100644
--- a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/expressions/FirExpressionUtil.kt
+++ b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/expressions/FirExpressionUtil.kt
@@ -43,13 +43,13 @@ inline val FirCall.arguments: List<FirExpression> get() = argumentList.arguments
 
 inline val FirCall.argument: FirExpression get() = argumentList.arguments.first()
 
-inline val FirCall.resolvedArgumentMapping: LinkedHashMap<FirExpression, FirValueParameter>?
+inline val FirCall.resolvedArgumentMapping: Map<FirExpression, FirValueParameter>?
     get() = when (val argumentList = argumentList) {
         is FirResolvedArgumentList -> argumentList.mapping
         else -> null
     }
 
-inline val FirCall.argumentMapping: LinkedHashMap<FirExpression, FirValueParameter>?
+inline val FirCall.argumentMapping: Map<FirExpression, FirValueParameter>?
     get() = when (val argumentList = argumentList) {
         is FirResolvedArgumentList -> argumentList.mapping
         is FirPartiallyResolvedArgumentList -> argumentList.mapping