diff --git a/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirBreakExpressionImpl.kt b/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirBreakExpressionImpl.kt
index 2f06f51ff3f..732de97904e 100644
--- a/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirBreakExpressionImpl.kt
+++ b/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirBreakExpressionImpl.kt
@@ -30,7 +30,7 @@ internal class FirBreakExpressionImpl(
     override var annotations: MutableOrEmptyList<FirAnnotation>,
     override val target: FirTarget<FirLoop>,
 ) : FirBreakExpression() {
-    override var coneTypeOrNull: ConeKotlinType? = StandardClassIds.Nothing.constructClassLikeType()
+    override val coneTypeOrNull: ConeKotlinType? = StandardClassIds.Nothing.constructClassLikeType()
 
     override fun <R, D> acceptChildren(visitor: FirVisitor<R, D>, data: D) {
         annotations.forEach { it.accept(visitor, data) }
@@ -46,9 +46,7 @@ internal class FirBreakExpressionImpl(
         return this
     }
 
-    override fun replaceConeTypeOrNull(newConeTypeOrNull: ConeKotlinType?) {
-        coneTypeOrNull = newConeTypeOrNull
-    }
+    override fun replaceConeTypeOrNull(newConeTypeOrNull: ConeKotlinType?) {}
 
     override fun replaceAnnotations(newAnnotations: List<FirAnnotation>) {
         annotations = newAnnotations.toMutableOrEmpty()
diff --git a/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirContinueExpressionImpl.kt b/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirContinueExpressionImpl.kt
index 1b83a7d002b..c2a9803507b 100644
--- a/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirContinueExpressionImpl.kt
+++ b/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirContinueExpressionImpl.kt
@@ -30,7 +30,7 @@ internal class FirContinueExpressionImpl(
     override var annotations: MutableOrEmptyList<FirAnnotation>,
     override val target: FirTarget<FirLoop>,
 ) : FirContinueExpression() {
-    override var coneTypeOrNull: ConeKotlinType? = StandardClassIds.Nothing.constructClassLikeType()
+    override val coneTypeOrNull: ConeKotlinType? = StandardClassIds.Nothing.constructClassLikeType()
 
     override fun <R, D> acceptChildren(visitor: FirVisitor<R, D>, data: D) {
         annotations.forEach { it.accept(visitor, data) }
@@ -46,9 +46,7 @@ internal class FirContinueExpressionImpl(
         return this
     }
 
-    override fun replaceConeTypeOrNull(newConeTypeOrNull: ConeKotlinType?) {
-        coneTypeOrNull = newConeTypeOrNull
-    }
+    override fun replaceConeTypeOrNull(newConeTypeOrNull: ConeKotlinType?) {}
 
     override fun replaceAnnotations(newAnnotations: List<FirAnnotation>) {
         annotations = newAnnotations.toMutableOrEmpty()
diff --git a/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirElseIfTrueCondition.kt b/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirElseIfTrueCondition.kt
index 3374a780ab2..b7c54623eb3 100644
--- a/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirElseIfTrueCondition.kt
+++ b/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirElseIfTrueCondition.kt
@@ -28,7 +28,7 @@ class FirElseIfTrueCondition @FirImplementationDetail constructor(
     override val source: KtSourceElement?,
     override var annotations: MutableOrEmptyList<FirAnnotation>,
 ) : FirExpression() {
-    override var coneTypeOrNull: ConeKotlinType? = StandardClassIds.Boolean.constructClassLikeType()
+    override val coneTypeOrNull: ConeKotlinType? = StandardClassIds.Boolean.constructClassLikeType()
 
     override fun <R, D> acceptChildren(visitor: FirVisitor<R, D>, data: D) {
         annotations.forEach { it.accept(visitor, data) }
@@ -44,9 +44,7 @@ class FirElseIfTrueCondition @FirImplementationDetail constructor(
         return this
     }
 
-    override fun replaceConeTypeOrNull(newConeTypeOrNull: ConeKotlinType?) {
-        coneTypeOrNull = newConeTypeOrNull
-    }
+    override fun replaceConeTypeOrNull(newConeTypeOrNull: ConeKotlinType?) {}
 
     override fun replaceAnnotations(newAnnotations: List<FirAnnotation>) {
         annotations = newAnnotations.toMutableOrEmpty()
diff --git a/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirReturnExpressionImpl.kt b/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirReturnExpressionImpl.kt
index 5de087f3ae3..44f60a78ec2 100644
--- a/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirReturnExpressionImpl.kt
+++ b/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirReturnExpressionImpl.kt
@@ -32,7 +32,7 @@ internal class FirReturnExpressionImpl(
     override val target: FirTarget<FirFunction>,
     override var result: FirExpression,
 ) : FirReturnExpression() {
-    override var coneTypeOrNull: ConeKotlinType? = StandardClassIds.Nothing.constructClassLikeType()
+    override val coneTypeOrNull: ConeKotlinType? = StandardClassIds.Nothing.constructClassLikeType()
 
     override fun <R, D> acceptChildren(visitor: FirVisitor<R, D>, data: D) {
         annotations.forEach { it.accept(visitor, data) }
@@ -60,9 +60,7 @@ internal class FirReturnExpressionImpl(
         return this
     }
 
-    override fun replaceConeTypeOrNull(newConeTypeOrNull: ConeKotlinType?) {
-        coneTypeOrNull = newConeTypeOrNull
-    }
+    override fun replaceConeTypeOrNull(newConeTypeOrNull: ConeKotlinType?) {}
 
     override fun replaceAnnotations(newAnnotations: List<FirAnnotation>) {
         annotations = newAnnotations.toMutableOrEmpty()
diff --git a/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirStringConcatenationCallImpl.kt b/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirStringConcatenationCallImpl.kt
index 1e75ad6bdc4..b8459a53b09 100644
--- a/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirStringConcatenationCallImpl.kt
+++ b/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirStringConcatenationCallImpl.kt
@@ -29,7 +29,7 @@ internal class FirStringConcatenationCallImpl(
     override var annotations: MutableOrEmptyList<FirAnnotation>,
     override var argumentList: FirArgumentList,
 ) : FirStringConcatenationCall() {
-    override var coneTypeOrNull: ConeKotlinType? = StandardClassIds.String.constructClassLikeType()
+    override val coneTypeOrNull: ConeKotlinType? = StandardClassIds.String.constructClassLikeType()
 
     override fun <R, D> acceptChildren(visitor: FirVisitor<R, D>, data: D) {
         annotations.forEach { it.accept(visitor, data) }
@@ -55,7 +55,5 @@ internal class FirStringConcatenationCallImpl(
         argumentList = newArgumentList
     }
 
-    override fun replaceConeTypeOrNull(newConeTypeOrNull: ConeKotlinType?) {
-        coneTypeOrNull = newConeTypeOrNull
-    }
+    override fun replaceConeTypeOrNull(newConeTypeOrNull: ConeKotlinType?) {}
 }
diff --git a/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirThrowExpressionImpl.kt b/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirThrowExpressionImpl.kt
index 31216df42b4..15770b5050f 100644
--- a/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirThrowExpressionImpl.kt
+++ b/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirThrowExpressionImpl.kt
@@ -29,7 +29,7 @@ internal class FirThrowExpressionImpl(
     override var annotations: MutableOrEmptyList<FirAnnotation>,
     override var exception: FirExpression,
 ) : FirThrowExpression() {
-    override var coneTypeOrNull: ConeKotlinType? = StandardClassIds.Nothing.constructClassLikeType()
+    override val coneTypeOrNull: ConeKotlinType? = StandardClassIds.Nothing.constructClassLikeType()
 
     override fun <R, D> acceptChildren(visitor: FirVisitor<R, D>, data: D) {
         annotations.forEach { it.accept(visitor, data) }
@@ -52,9 +52,7 @@ internal class FirThrowExpressionImpl(
         return this
     }
 
-    override fun replaceConeTypeOrNull(newConeTypeOrNull: ConeKotlinType?) {
-        coneTypeOrNull = newConeTypeOrNull
-    }
+    override fun replaceConeTypeOrNull(newConeTypeOrNull: ConeKotlinType?) {}
 
     override fun replaceAnnotations(newAnnotations: List<FirAnnotation>) {
         annotations = newAnnotations.toMutableOrEmpty()
diff --git a/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirUnitExpression.kt b/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirUnitExpression.kt
index feb953a7c88..bd55a7f02d6 100644
--- a/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirUnitExpression.kt
+++ b/compiler/fir/tree/gen/org/jetbrains/kotlin/fir/expressions/impl/FirUnitExpression.kt
@@ -28,7 +28,7 @@ class FirUnitExpression @FirImplementationDetail constructor(
     override val source: KtSourceElement?,
     override var annotations: MutableOrEmptyList<FirAnnotation>,
 ) : FirExpression() {
-    override var coneTypeOrNull: ConeKotlinType? = StandardClassIds.Unit.constructClassLikeType()
+    override val coneTypeOrNull: ConeKotlinType? = StandardClassIds.Unit.constructClassLikeType()
 
     override fun <R, D> acceptChildren(visitor: FirVisitor<R, D>, data: D) {
         annotations.forEach { it.accept(visitor, data) }
@@ -44,9 +44,7 @@ class FirUnitExpression @FirImplementationDetail constructor(
         return this
     }
 
-    override fun replaceConeTypeOrNull(newConeTypeOrNull: ConeKotlinType?) {
-        coneTypeOrNull = newConeTypeOrNull
-    }
+    override fun replaceConeTypeOrNull(newConeTypeOrNull: ConeKotlinType?) {}
 
     override fun replaceAnnotations(newAnnotations: List<FirAnnotation>) {
         annotations = newAnnotations.toMutableOrEmpty()
diff --git a/compiler/fir/tree/tree-generator/src/org/jetbrains/kotlin/fir/tree/generator/context/AbstractFirTreeImplementationConfigurator.kt b/compiler/fir/tree/tree-generator/src/org/jetbrains/kotlin/fir/tree/generator/context/AbstractFirTreeImplementationConfigurator.kt
index 9ff94b70844..da43161154d 100644
--- a/compiler/fir/tree/tree-generator/src/org/jetbrains/kotlin/fir/tree/generator/context/AbstractFirTreeImplementationConfigurator.kt
+++ b/compiler/fir/tree/tree-generator/src/org/jetbrains/kotlin/fir/tree/generator/context/AbstractFirTreeImplementationConfigurator.kt
@@ -122,7 +122,10 @@ abstract class AbstractFirTreeImplementationConfigurator {
         }
 
         fun defaultBuiltInType(type: String) {
-            default("coneTypeOrNull", "StandardClassIds.$type.constructClassLikeType()")
+            default("coneTypeOrNull") {
+                value = "StandardClassIds.$type.constructClassLikeType()"
+                isMutable = false
+            }
             useTypes(standardClassIdsType, constructClassLikeTypeImport)
         }