diff --git a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/types/ConeTypeContext.kt b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/types/ConeTypeContext.kt
index 724b375a5e1..5c15dea2e89 100644
--- a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/types/ConeTypeContext.kt
+++ b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/types/ConeTypeContext.kt
@@ -338,14 +338,13 @@ interface ConeTypeContext : TypeSystemContext, TypeSystemOptimizationContext {
     }
 
     override fun TypeConstructorMarker.isAnyConstructor(): Boolean {
-        return this is ConeClassLikeSymbol && classId.asString() == "kotlin/Any"
+        return this is ConeClassLikeSymbol && classId == StandardClassIds.Any
     }
 
     override fun TypeConstructorMarker.isNothingConstructor(): Boolean {
-        return this is ConeClassLikeSymbol && classId.asString() == "kotlin/Nothing"
+        return this is ConeClassLikeSymbol && classId == StandardClassIds.Nothing
     }
 
-
     override fun KotlinTypeMarker.isNotNullNothing(): Boolean {
         require(this is ConeKotlinType)
         return typeConstructor().isNothingConstructor() && !this.nullability.isNullable