diff --git a/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/diagnostics/FirErrorsDefaultMessages.kt b/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/diagnostics/FirErrorsDefaultMessages.kt
index a56a81e8c53..328d9c81377 100644
--- a/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/diagnostics/FirErrorsDefaultMessages.kt
+++ b/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/diagnostics/FirErrorsDefaultMessages.kt
@@ -1518,7 +1518,7 @@ object FirErrorsDefaultMessages : BaseDiagnosticRendererFactory() {
         map.put(LOCAL_VARIABLE_WITH_TYPE_PARAMETERS_WARNING, "Type parameters for local variables are deprecated")
         map.put(LOCAL_VARIABLE_WITH_TYPE_PARAMETERS, "Local variables are not allowed to have type parameters")
 
-        map.put(CONST_VAL_NOT_TOP_LEVEL_OR_OBJECT, "Const 'val' are only allowed on top level or in objects")
+        map.put(CONST_VAL_NOT_TOP_LEVEL_OR_OBJECT, "Const 'val' are only allowed on top level, in named objects, or in companion objects")
         map.put(CONST_VAL_WITH_GETTER, "Const 'val' should not have a getter")
         map.put(CONST_VAL_WITH_DELEGATE, "Const 'val' should not have a delegate")
         map.put(TYPE_CANT_BE_USED_FOR_CONST_VAL, "Const ''val'' has type ''{0}''. Only primitives and String are allowed", RENDER_TYPE)
diff --git a/compiler/frontend/src/org/jetbrains/kotlin/diagnostics/rendering/DefaultErrorMessages.java b/compiler/frontend/src/org/jetbrains/kotlin/diagnostics/rendering/DefaultErrorMessages.java
index 077f874c95c..ee76b27cf1c 100644
--- a/compiler/frontend/src/org/jetbrains/kotlin/diagnostics/rendering/DefaultErrorMessages.java
+++ b/compiler/frontend/src/org/jetbrains/kotlin/diagnostics/rendering/DefaultErrorMessages.java
@@ -1012,7 +1012,7 @@ public class DefaultErrorMessages {
 
         MAP.put(ANNOTATION_ON_SUPERCLASS, "Annotations on superclass are meaningless");
 
-        MAP.put(CONST_VAL_NOT_TOP_LEVEL_OR_OBJECT, "Const 'val' are only allowed on top level or in objects");
+        MAP.put(CONST_VAL_NOT_TOP_LEVEL_OR_OBJECT, "Const 'val' are only allowed on top level, in named objects, or in companion objects");
         MAP.put(CONST_VAL_WITH_DELEGATE, "Const 'val' should not have a delegate");
         MAP.put(CONST_VAL_WITH_GETTER, "Const 'val' should not have a getter");
         MAP.put(TYPE_CANT_BE_USED_FOR_CONST_VAL, "Const ''val'' has type ''{0}''. Only primitives and String are allowed", RENDER_TYPE);