diff --git a/compiler/backend/src/org/jetbrains/kotlin/codegen/ClosureCodegen.java b/compiler/backend/src/org/jetbrains/kotlin/codegen/ClosureCodegen.java
index 8f53fd51545..d1d7fbf3d44 100644
--- a/compiler/backend/src/org/jetbrains/kotlin/codegen/ClosureCodegen.java
+++ b/compiler/backend/src/org/jetbrains/kotlin/codegen/ClosureCodegen.java
@@ -59,7 +59,7 @@ import java.util.List;
 import static org.jetbrains.kotlin.codegen.AsmUtil.*;
 import static org.jetbrains.kotlin.codegen.JvmCodegenUtil.isConst;
 import static org.jetbrains.kotlin.codegen.binding.CodegenBinding.CLOSURE;
-import static org.jetbrains.kotlin.codegen.inline.InlineCodegenUtilsKt.initDefaultSourceMappingIfNeeded;
+import static org.jetbrains.kotlin.codegen.inline.InlineCodegenUtils2Kt.initDefaultSourceMappingIfNeeded;
 import static org.jetbrains.kotlin.codegen.serialization.JvmSerializationBindings.METHOD_FOR_FUNCTION;
 import static org.jetbrains.kotlin.resolve.jvm.AsmTypes.*;
 import static org.jetbrains.kotlin.resolve.jvm.diagnostics.JvmDeclarationOrigin.NO_ORIGIN;
diff --git a/compiler/backend/src/org/jetbrains/kotlin/codegen/ImplementationBodyCodegen.java b/compiler/backend/src/org/jetbrains/kotlin/codegen/ImplementationBodyCodegen.java
index 97be52a709e..0eb2e3b6444 100644
--- a/compiler/backend/src/org/jetbrains/kotlin/codegen/ImplementationBodyCodegen.java
+++ b/compiler/backend/src/org/jetbrains/kotlin/codegen/ImplementationBodyCodegen.java
@@ -78,7 +78,7 @@ import static org.jetbrains.kotlin.codegen.CodegenUtilKt.isGenericToArray;
 import static org.jetbrains.kotlin.codegen.CodegenUtilKt.isNonGenericToArray;
 import static org.jetbrains.kotlin.codegen.JvmCodegenUtil.*;
 import static org.jetbrains.kotlin.codegen.binding.CodegenBinding.enumEntryNeedSubclass;
-import static org.jetbrains.kotlin.codegen.inline.InlineCodegenUtilsKt.initDefaultSourceMappingIfNeeded;
+import static org.jetbrains.kotlin.codegen.inline.InlineCodegenUtils2Kt.initDefaultSourceMappingIfNeeded;
 import static org.jetbrains.kotlin.resolve.BindingContextUtils.getDelegationConstructorCall;
 import static org.jetbrains.kotlin.resolve.BindingContextUtils.getNotNull;
 import static org.jetbrains.kotlin.resolve.DescriptorToSourceUtils.descriptorToDeclaration;
diff --git a/compiler/backend/src/org/jetbrains/kotlin/codegen/inline/inlineCodegenUtils.kt b/compiler/backend/src/org/jetbrains/kotlin/codegen/inline/inlineCodegenUtils.kt
index 47c1d7529c6..72529fed5da 100644
--- a/compiler/backend/src/org/jetbrains/kotlin/codegen/inline/inlineCodegenUtils.kt
+++ b/compiler/backend/src/org/jetbrains/kotlin/codegen/inline/inlineCodegenUtils.kt
@@ -144,22 +144,6 @@ fun getMethodNode(
     return SMAPAndMethodNode(node!!, smap)
 }
 
-fun initDefaultSourceMappingIfNeeded(
-        context: CodegenContext<*>, codegen: MemberCodegen<*>, state: GenerationState
-) {
-    if (state.isInlineDisabled) return
-
-    var parentContext: CodegenContext<*>? = context.parentContext
-    while (parentContext != null) {
-        if (parentContext.isInlineMethodContext) {
-            //just init default one to one mapping
-            codegen.orCreateSourceMapper
-            break
-        }
-        parentContext = parentContext.parentContext
-    }
-}
-
 fun findVirtualFile(state: GenerationState, classId: ClassId): VirtualFile? {
     return VirtualFileFinder.getInstance(state.project).findVirtualFileWithHeader(classId)
 }
diff --git a/compiler/backend/src/org/jetbrains/kotlin/codegen/inline/inlineCodegenUtils2.kt b/compiler/backend/src/org/jetbrains/kotlin/codegen/inline/inlineCodegenUtils2.kt
new file mode 100644
index 00000000000..2f365d25141
--- /dev/null
+++ b/compiler/backend/src/org/jetbrains/kotlin/codegen/inline/inlineCodegenUtils2.kt
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2010-2017 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.codegen.inline
+
+import org.jetbrains.kotlin.codegen.MemberCodegen
+import org.jetbrains.kotlin.codegen.context.CodegenContext
+import org.jetbrains.kotlin.codegen.state.GenerationState
+
+//This method was moved to separate class cause of LightClass generation problem: KT-18419
+//Move it back to inlineCodegenUtil after fix
+fun initDefaultSourceMappingIfNeeded(
+        context: CodegenContext<*>, codegen: MemberCodegen<*>, state: GenerationState
+) {
+    if (state.isInlineDisabled) return
+
+
+    var parentContext: CodegenContext<*>? = context.parentContext
+    while (parentContext != null) {
+        if (parentContext.isInlineMethodContext) {
+            //just init default one to one mapping
+            codegen.orCreateSourceMapper
+            break
+        }
+        parentContext = parentContext.parentContext
+    }
+}