diff --git a/idea/src/org/jetbrains/kotlin/idea/refactoring/changeSignature/typeUtils.kt b/idea/ide-common/src/org/jetbrains/kotlin/util/substitutionUtils.kt
similarity index 60%
rename from idea/src/org/jetbrains/kotlin/idea/refactoring/changeSignature/typeUtils.kt
rename to idea/ide-common/src/org/jetbrains/kotlin/util/substitutionUtils.kt
index fca58008fe9..ce6491da092 100644
--- a/idea/src/org/jetbrains/kotlin/idea/refactoring/changeSignature/typeUtils.kt
+++ b/idea/ide-common/src/org/jetbrains/kotlin/util/substitutionUtils.kt
@@ -14,17 +14,15 @@
  * limitations under the License.
  */
 
-package org.jetbrains.kotlin.idea.refactoring.changeSignature
+package org.jetbrains.kotlin.types.substitutions
 
 import org.jetbrains.kotlin.descriptors.CallableDescriptor
 import org.jetbrains.kotlin.descriptors.ClassDescriptor
-import org.jetbrains.kotlin.idea.refactoring.changeSignature.usages.JetCallableDefinitionUsage
-import org.jetbrains.kotlin.idea.util.IdeDescriptorRenderers
 import org.jetbrains.kotlin.types.*
 import org.jetbrains.kotlin.types.checker.TypeCheckingProcedure
 import java.util.LinkedHashMap
 
-private fun getTypeSubstitution(baseType: JetType, derivedType: JetType): LinkedHashMap<TypeConstructor, TypeProjection>? {
+public fun getTypeSubstitution(baseType: JetType, derivedType: JetType): LinkedHashMap<TypeConstructor, TypeProjection>? {
     val substitutedType = TypeCheckingProcedure.findCorrespondingSupertype(derivedType, baseType) ?: return null
 
     val substitution = LinkedHashMap<TypeConstructor, TypeProjection>(substitutedType.getArguments().size())
@@ -35,7 +33,7 @@ private fun getTypeSubstitution(baseType: JetType, derivedType: JetType): Linked
     return substitution
 }
 
-private fun getCallableSubstitution(
+public fun getCallableSubstitution(
         baseCallable: CallableDescriptor,
         derivedCallable: CallableDescriptor
 ): MutableMap<TypeConstructor, TypeProjection>? {
@@ -50,23 +48,13 @@ private fun getCallableSubstitution(
     return substitution
 }
 
-fun getTypeSubstitutor(baseType: JetType, derivedType: JetType): TypeSubstitutor? {
+public fun getCallableSubstitutor(
+        baseCallable: CallableDescriptor,
+        derivedCallable: CallableDescriptor
+): TypeSubstitutor? {
+    return getCallableSubstitution(baseCallable, derivedCallable)?.let { TypeSubstitutor.create(it) }
+}
+
+public fun getTypeSubstitutor(baseType: JetType, derivedType: JetType): TypeSubstitutor? {
     return getTypeSubstitution(baseType, derivedType)?.let { TypeSubstitutor.create(it) }
 }
-
-fun getCallableSubstitutor(
-        baseFunction: JetCallableDefinitionUsage<*>,
-        derivedCallable: JetCallableDefinitionUsage<*>
-): TypeSubstitutor? {
-    val currentBaseFunction = baseFunction.getCurrentCallableDescriptor()
-    val currentDerivedFunction = derivedCallable.getCurrentCallableDescriptor()
-    if (currentBaseFunction == null || currentDerivedFunction == null) return null
-
-    return getCallableSubstitution(currentBaseFunction, currentDerivedFunction)?.let { TypeSubstitutor.create(it) }
-}
-
-fun JetType.renderTypeWithSubstitution(substitutor: TypeSubstitutor?, defaultText: String, inArgumentPosition: Boolean): String {
-    val newType = substitutor?.substitute(this, Variance.INVARIANT) ?: return defaultText
-    val renderer = if (inArgumentPosition) IdeDescriptorRenderers.SOURCE_CODE_FOR_TYPE_ARGUMENTS else IdeDescriptorRenderers.SOURCE_CODE
-    return renderer.renderType(newType)
-}
diff --git a/idea/src/org/jetbrains/kotlin/idea/refactoring/changeSignature/changeSignatureUtils.kt b/idea/src/org/jetbrains/kotlin/idea/refactoring/changeSignature/changeSignatureUtils.kt
index 3effd19684b..983be4304b9 100644
--- a/idea/src/org/jetbrains/kotlin/idea/refactoring/changeSignature/changeSignatureUtils.kt
+++ b/idea/src/org/jetbrains/kotlin/idea/refactoring/changeSignature/changeSignatureUtils.kt
@@ -22,9 +22,15 @@ import com.intellij.refactoring.changeSignature.OverriderUsageInfo
 import com.intellij.usageView.UsageInfo
 import org.jetbrains.kotlin.idea.refactoring.changeSignature.usages.DeferredJavaMethodKotlinCallerUsage
 import org.jetbrains.kotlin.idea.refactoring.changeSignature.usages.JavaMethodKotlinUsageWithDelegate
+import org.jetbrains.kotlin.idea.refactoring.changeSignature.usages.JetCallableDefinitionUsage
 import org.jetbrains.kotlin.idea.refactoring.changeSignature.usages.KotlinCallerUsage
+import org.jetbrains.kotlin.idea.util.IdeDescriptorRenderers
 import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.psi.psiUtil.parentsWithSelf
+import org.jetbrains.kotlin.types.JetType
+import org.jetbrains.kotlin.types.TypeSubstitutor
+import org.jetbrains.kotlin.types.Variance
+import org.jetbrains.kotlin.types.substitutions.getCallableSubstitutor
 
 private fun JetNamedDeclaration.getDeclarationBody(): JetElement? {
     return when {
@@ -56,4 +62,19 @@ public fun JetElement.isInsideOfCallerBody(allUsages: Array<out UsageInfo>): Boo
     } as? JetNamedDeclaration ?: return false
     val body = container.getDeclarationBody() ?: return false
     return body.getTextRange().contains(getTextRange()) && container.isCaller(allUsages)
+}
+
+fun getCallableSubstitutor(
+        baseFunction: JetCallableDefinitionUsage<*>,
+        derivedCallable: JetCallableDefinitionUsage<*>
+): TypeSubstitutor? {
+    val currentBaseFunction = baseFunction.getCurrentCallableDescriptor() ?: return null
+    val currentDerivedFunction = derivedCallable.getCurrentCallableDescriptor() ?: return null
+    return getCallableSubstitutor(currentBaseFunction, currentDerivedFunction)
+}
+
+fun JetType.renderTypeWithSubstitution(substitutor: TypeSubstitutor?, defaultText: String, inArgumentPosition: Boolean): String {
+    val newType = substitutor?.substitute(this, Variance.INVARIANT) ?: return defaultText
+    val renderer = if (inArgumentPosition) IdeDescriptorRenderers.SOURCE_CODE_FOR_TYPE_ARGUMENTS else IdeDescriptorRenderers.SOURCE_CODE
+    return renderer.renderType(newType)
 }
\ No newline at end of file
diff --git a/idea/src/org/jetbrains/kotlin/idea/refactoring/changeSignature/usages/JetCallableDefinitionUsage.java b/idea/src/org/jetbrains/kotlin/idea/refactoring/changeSignature/usages/JetCallableDefinitionUsage.java
index d25a1132d0b..1b9c7c24c93 100644
--- a/idea/src/org/jetbrains/kotlin/idea/refactoring/changeSignature/usages/JetCallableDefinitionUsage.java
+++ b/idea/src/org/jetbrains/kotlin/idea/refactoring/changeSignature/usages/JetCallableDefinitionUsage.java
@@ -26,7 +26,6 @@ import kotlin.KotlinPackage;
 import kotlin.Pair;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
-import org.jetbrains.kotlin.builtins.KotlinBuiltIns;
 import org.jetbrains.kotlin.descriptors.CallableDescriptor;
 import org.jetbrains.kotlin.descriptors.ClassDescriptor;
 import org.jetbrains.kotlin.descriptors.DeclarationDescriptor;
@@ -38,7 +37,6 @@ import org.jetbrains.kotlin.idea.refactoring.changeSignature.ChangeSignaturePack
 import org.jetbrains.kotlin.idea.refactoring.changeSignature.JetChangeInfo;
 import org.jetbrains.kotlin.idea.refactoring.changeSignature.JetParameterInfo;
 import org.jetbrains.kotlin.idea.refactoring.changeSignature.JetValVar;
-import org.jetbrains.kotlin.idea.util.IdeDescriptorRenderers;
 import org.jetbrains.kotlin.idea.util.ShortenReferences;
 import org.jetbrains.kotlin.idea.util.ShortenReferences.Options;
 import org.jetbrains.kotlin.lexer.JetModifierKeywordToken;
@@ -50,6 +48,8 @@ import org.jetbrains.kotlin.resolve.DescriptorToSourceUtils;
 import org.jetbrains.kotlin.resolve.lazy.BodyResolveMode;
 import org.jetbrains.kotlin.types.JetType;
 import org.jetbrains.kotlin.types.TypeSubstitutor;
+import org.jetbrains.kotlin.types.TypesPackage;
+import org.jetbrains.kotlin.types.substitutions.SubstitutionsPackage;
 
 import java.util.List;
 
@@ -126,7 +126,7 @@ public class JetCallableDefinitionUsage<T extends PsiElement> extends JetUsageIn
 
                 if (!(classDescriptor instanceof ClassDescriptor)) return null;
 
-                typeSubstitutor = ChangeSignaturePackage.getTypeSubstitutor(
+                typeSubstitutor = SubstitutionsPackage.getTypeSubstitutor(
                         ((ClassDescriptor) classDescriptor).getDefaultType(),
                         samCallType
                 );