diff --git a/idea/src/org/jetbrains/kotlin/idea/quickfix/SpecifyTypeExplicitlyFix.java b/idea/src/org/jetbrains/kotlin/idea/quickfix/SpecifyTypeExplicitlyFix.java
deleted file mode 100644
index 20a1e0f1b2e..00000000000
--- a/idea/src/org/jetbrains/kotlin/idea/quickfix/SpecifyTypeExplicitlyFix.java
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * Copyright 2010-2015 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.jetbrains.kotlin.idea.quickfix;
-
-import com.intellij.codeInsight.intention.PsiElementBaseIntentionAction;
-import com.intellij.openapi.editor.Editor;
-import com.intellij.openapi.project.Project;
-import com.intellij.psi.PsiElement;
-import com.intellij.psi.util.PsiTreeUtil;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.kotlin.idea.intentions.SpecifyTypeExplicitlyIntention;
-import org.jetbrains.kotlin.psi.JetCallableDeclaration;
-import org.jetbrains.kotlin.psi.JetNamedFunction;
-import org.jetbrains.kotlin.psi.JetProperty;
-import org.jetbrains.kotlin.types.JetType;
-
-@SuppressWarnings("IntentionDescriptionNotFoundInspection")
-public class SpecifyTypeExplicitlyFix extends PsiElementBaseIntentionAction {
-    @NotNull
-    @Override
-    public String getFamilyName() {
-        return "Specify type explicitly";
-    }
-
-    @Override
-    public void invoke(@NotNull Project project, @NotNull Editor editor, @NotNull PsiElement element) {
-        //noinspection unchecked
-        JetCallableDeclaration declaration = PsiTreeUtil.getParentOfType(element, JetProperty.class, JetNamedFunction.class);
-        JetType type = SpecifyTypeExplicitlyIntention.Companion.getTypeForDeclaration(declaration);
-        SpecifyTypeExplicitlyIntention.Companion.addTypeAnnotation(editor, declaration, type);
-    }
-
-    @Override
-    public boolean isAvailable(@NotNull Project project, @NotNull Editor editor, @NotNull PsiElement element) {
-        //noinspection unchecked
-        JetCallableDeclaration declaration = PsiTreeUtil.getParentOfType(element, JetProperty.class, JetNamedFunction.class);
-        if (declaration instanceof JetProperty) {
-            setText("Specify type explicitly");
-        }
-        else if (declaration instanceof JetNamedFunction) {
-            setText("Specify return type explicitly");
-        }
-        else {
-            return false;
-        }
-
-        return !SpecifyTypeExplicitlyIntention.Companion.getTypeForDeclaration(declaration).isError();
-    }
-}
diff --git a/idea/src/org/jetbrains/kotlin/idea/quickfix/SpecifyTypeExplicitlyFix.kt b/idea/src/org/jetbrains/kotlin/idea/quickfix/SpecifyTypeExplicitlyFix.kt
new file mode 100644
index 00000000000..31e602fc5f9
--- /dev/null
+++ b/idea/src/org/jetbrains/kotlin/idea/quickfix/SpecifyTypeExplicitlyFix.kt
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2010-2015 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.idea.quickfix
+
+import com.intellij.codeInsight.intention.PsiElementBaseIntentionAction
+import com.intellij.openapi.editor.Editor
+import com.intellij.openapi.project.Project
+import com.intellij.psi.PsiElement
+import com.intellij.psi.util.PsiTreeUtil
+import org.jetbrains.kotlin.idea.intentions.SpecifyTypeExplicitlyIntention
+import org.jetbrains.kotlin.psi.JetCallableDeclaration
+import org.jetbrains.kotlin.psi.JetNamedFunction
+import org.jetbrains.kotlin.psi.JetProperty
+import org.jetbrains.kotlin.psi.psiUtil.getParentOfType
+
+SuppressWarnings("IntentionDescriptionNotFoundInspection")
+public class SpecifyTypeExplicitlyFix : PsiElementBaseIntentionAction() {
+    override fun getFamilyName() = "Specify type explicitly"
+
+    override fun invoke(project: Project, editor: Editor, element: PsiElement) {
+        val declaration = declarationByElement(element)!!
+        val type = SpecifyTypeExplicitlyIntention.getTypeForDeclaration(declaration)
+        SpecifyTypeExplicitlyIntention.addTypeAnnotation(editor, declaration, type)
+    }
+
+    override fun isAvailable(project: Project, editor: Editor, element: PsiElement): Boolean {
+        val declaration = declarationByElement(element)
+        if (declaration is JetProperty) {
+            setText("Specify type explicitly")
+        }
+        else if (declaration is JetNamedFunction) {
+            setText("Specify return type explicitly")
+        }
+        else {
+            return false
+        }
+
+        return !SpecifyTypeExplicitlyIntention.getTypeForDeclaration(declaration).isError()
+    }
+
+    private fun declarationByElement(element: PsiElement): JetCallableDeclaration? {
+        return PsiTreeUtil.getParentOfType(element, javaClass<JetProperty>(), javaClass<JetNamedFunction>()) as JetCallableDeclaration?
+    }
+}