diff --git a/idea/src/org/jetbrains/kotlin/idea/formatter/KotlinPreFormatProcessor.kt b/idea/src/org/jetbrains/kotlin/idea/formatter/KotlinPreFormatProcessor.kt
index 0e4fd680053..bbf47c392ca 100644
--- a/idea/src/org/jetbrains/kotlin/idea/formatter/KotlinPreFormatProcessor.kt
+++ b/idea/src/org/jetbrains/kotlin/idea/formatter/KotlinPreFormatProcessor.kt
@@ -68,8 +68,15 @@ private class Visitor(var range: TextRange) : KtTreeVisitorVoid() {
             if (lastEntry == null && classBody.containsToken(KtTokens.SEMICOLON)) return
 
             val semicolon = psiFactory.createSemicolon()
-            classBody.addAfter(semicolon, lastEntry)
-            delta += semicolon.textLength
+            delta += if (lastEntry != null) {
+                classBody.addAfter(semicolon, lastEntry)
+                semicolon.textLength
+            } else {
+                val newLine = psiFactory.createNewLine()
+                classBody.addAfter(semicolon, classBody.lBrace)
+                classBody.addAfter(psiFactory.createNewLine(), classBody.lBrace)
+                semicolon.textLength + newLine.textLength
+            }
         }
 
         range = TextRange(range.startOffset, range.endOffset + delta)
diff --git a/idea/testData/codeInsight/overrideImplement/enumClass.kt b/idea/testData/codeInsight/overrideImplement/enumClass.kt
new file mode 100644
index 00000000000..d51af681e76
--- /dev/null
+++ b/idea/testData/codeInsight/overrideImplement/enumClass.kt
@@ -0,0 +1 @@
+enum <caret>class Foo
\ No newline at end of file
diff --git a/idea/testData/codeInsight/overrideImplement/enumClass.kt.after b/idea/testData/codeInsight/overrideImplement/enumClass.kt.after
new file mode 100644
index 00000000000..48c1f9c4513
--- /dev/null
+++ b/idea/testData/codeInsight/overrideImplement/enumClass.kt.after
@@ -0,0 +1,7 @@
+enum class Foo {
+    ;
+
+    override fun toString(): String {
+        <selection><caret>return super.toString()</selection>
+    }
+}
\ No newline at end of file
diff --git a/idea/testData/codeInsight/overrideImplement/enumClass2.kt b/idea/testData/codeInsight/overrideImplement/enumClass2.kt
new file mode 100644
index 00000000000..ed190cf4420
--- /dev/null
+++ b/idea/testData/codeInsight/overrideImplement/enumClass2.kt
@@ -0,0 +1,2 @@
+enum <caret>class Foo {
+}
\ No newline at end of file
diff --git a/idea/testData/codeInsight/overrideImplement/enumClass2.kt.after b/idea/testData/codeInsight/overrideImplement/enumClass2.kt.after
new file mode 100644
index 00000000000..48c1f9c4513
--- /dev/null
+++ b/idea/testData/codeInsight/overrideImplement/enumClass2.kt.after
@@ -0,0 +1,7 @@
+enum class Foo {
+    ;
+
+    override fun toString(): String {
+        <selection><caret>return super.toString()</selection>
+    }
+}
\ No newline at end of file
diff --git a/idea/testData/codeInsight/overrideImplement/enumClass3.kt b/idea/testData/codeInsight/overrideImplement/enumClass3.kt
new file mode 100644
index 00000000000..c2c7e7cae0a
--- /dev/null
+++ b/idea/testData/codeInsight/overrideImplement/enumClass3.kt
@@ -0,0 +1,3 @@
+enum <caret>class Foo {
+    A
+}
\ No newline at end of file
diff --git a/idea/testData/codeInsight/overrideImplement/enumClass3.kt.after b/idea/testData/codeInsight/overrideImplement/enumClass3.kt.after
new file mode 100644
index 00000000000..88f97a67189
--- /dev/null
+++ b/idea/testData/codeInsight/overrideImplement/enumClass3.kt.after
@@ -0,0 +1,7 @@
+enum class Foo {
+    A;
+
+    override fun toString(): String {
+        <selection><caret>return super.toString()</selection>
+    }
+}
\ No newline at end of file
diff --git a/idea/testData/codeInsight/overrideImplement/enumClass4.kt b/idea/testData/codeInsight/overrideImplement/enumClass4.kt
new file mode 100644
index 00000000000..38f95ab2abe
--- /dev/null
+++ b/idea/testData/codeInsight/overrideImplement/enumClass4.kt
@@ -0,0 +1,3 @@
+enum <caret>class Foo {
+    A;
+}
\ No newline at end of file
diff --git a/idea/testData/codeInsight/overrideImplement/enumClass4.kt.after b/idea/testData/codeInsight/overrideImplement/enumClass4.kt.after
new file mode 100644
index 00000000000..88f97a67189
--- /dev/null
+++ b/idea/testData/codeInsight/overrideImplement/enumClass4.kt.after
@@ -0,0 +1,7 @@
+enum class Foo {
+    A;
+
+    override fun toString(): String {
+        <selection><caret>return super.toString()</selection>
+    }
+}
\ No newline at end of file
diff --git a/idea/tests/org/jetbrains/kotlin/idea/codeInsight/OverrideImplementTest.kt b/idea/tests/org/jetbrains/kotlin/idea/codeInsight/OverrideImplementTest.kt
index ecc7ef24700..ac9028b746e 100644
--- a/idea/tests/org/jetbrains/kotlin/idea/codeInsight/OverrideImplementTest.kt
+++ b/idea/tests/org/jetbrains/kotlin/idea/codeInsight/OverrideImplementTest.kt
@@ -313,4 +313,20 @@ class OverrideImplementTest : AbstractOverrideImplementTest() {
     fun testImplementFromClassName6() {
         doMultiImplementFileTest()
     }
+
+    fun testEnumClass() {
+        doOverrideFileTest("toString")
+    }
+
+    fun testEnumClass2() {
+        doOverrideFileTest("toString")
+    }
+
+    fun testEnumClass3() {
+        doOverrideFileTest("toString")
+    }
+
+    fun testEnumClass4() {
+        doOverrideFileTest("toString")
+    }
 }