diff --git a/compiler/testData/ir/irText/expressions/kt30020.fir.txt b/compiler/testData/ir/irText/expressions/kt30020.fir.txt
index 06c8c9d8669..1f3b186a079 100644
--- a/compiler/testData/ir/irText/expressions/kt30020.fir.txt
+++ b/compiler/testData/ir/irText/expressions/kt30020.fir.txt
@@ -82,7 +82,7 @@ FILE fqName:<root> fileName:/kt30020.kt
   FUN name:testExtensionReceiver visibility:public modality:FINAL <> ($receiver:kotlin.collections.MutableList<kotlin.Any>) returnType:kotlin.Unit
     $receiver: VALUE_PARAMETER name:<this> type:kotlin.collections.MutableList<kotlin.Any>
     BLOCK_BODY
-      ERROR_EXPR 'Operator overload ambiguity. plusAssign and plus are compatible' type=IrErrorType
+      ERROR_EXPR 'Operator overload ambiguity. Compatible candidates: [kotlin/collections/plus, kotlin/collections/plusAssign]' type=IrErrorType
   CLASS CLASS name:AML modality:ABSTRACT visibility:public superTypes:[kotlin.collections.MutableList<kotlin.Int>]
     $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.AML
     CONSTRUCTOR visibility:public <> () returnType:<root>.AML [primary]
@@ -92,7 +92,7 @@ FILE fqName:<root> fileName:/kt30020.kt
     FUN name:testExplicitThis visibility:public modality:FINAL <> ($this:<root>.AML) returnType:kotlin.Unit
       $this: VALUE_PARAMETER name:<this> type:<root>.AML
       BLOCK_BODY
-        ERROR_EXPR 'Operator overload ambiguity. plusAssign and plus are compatible' type=IrErrorType
+        ERROR_EXPR 'Operator overload ambiguity. Compatible candidates: [kotlin/collections/plus, kotlin/collections/plusAssign]' type=IrErrorType
     CLASS CLASS name:Inner modality:FINAL visibility:public [inner] superTypes:[kotlin.Any]
       $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.AML.Inner
       CONSTRUCTOR visibility:public <> () returnType:<root>.AML.Inner [primary]
@@ -102,7 +102,7 @@ FILE fqName:<root> fileName:/kt30020.kt
       FUN name:testOuterThis visibility:public modality:FINAL <> ($this:<root>.AML.Inner) returnType:kotlin.Unit
         $this: VALUE_PARAMETER name:<this> type:<root>.AML.Inner
         BLOCK_BODY
-          ERROR_EXPR 'Operator overload ambiguity. plusAssign and plus are compatible' type=IrErrorType
+          ERROR_EXPR 'Operator overload ambiguity. Compatible candidates: [kotlin/collections/plus, kotlin/collections/plusAssign]' type=IrErrorType
       FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean
         overridden:
           public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in kotlin.Any