diff --git a/libraries/stdlib/src/kotlin/Strings.kt b/libraries/stdlib/src/kotlin/Strings.kt
index ac37bd5be84..e1519a90928 100644
--- a/libraries/stdlib/src/kotlin/Strings.kt
+++ b/libraries/stdlib/src/kotlin/Strings.kt
@@ -58,7 +58,7 @@ public inline fun String.toCharList(): List<Character> = toCharArray().toList()
 
 public inline fun String.format(format : String, vararg args : Any?) : String = java.lang.String.format(format, args).sure()
 
-public inline fun String.split(regex : String) : Array<String?>? = (this as java.lang.String).split(regex)
+public inline fun String.split(regex : String) : Array<String> = (this as java.lang.String).split(regex) as Array<String>
 
 public inline fun String.substring(beginIndex : Int) : String = (this as java.lang.String).substring(beginIndex).sure()
 
diff --git a/libraries/tools/kdoc/ApiDocsModule.kt b/libraries/tools/kdoc/ApiDocsModule.kt
index 95bda2de587..90aa07b45c4 100644
--- a/libraries/tools/kdoc/ApiDocsModule.kt
+++ b/libraries/tools/kdoc/ApiDocsModule.kt
@@ -2,7 +2,7 @@ import kotlin.modules.*
 
 fun project() {
     module("apidocs") {
-        classpath += "../lib/junit-4.9.jar"
+        classpath += "../../lib/junit-4.9.jar"
 
         addSourceFiles("../../stdlib/src")
         addSourceFiles("../../kunit/src/main/kotlin")
diff --git a/libraries/tools/kotlin-maven-plugin/pom.xml b/libraries/tools/kotlin-maven-plugin/pom.xml
index 9f57ea5de85..007c2bf74b5 100644
--- a/libraries/tools/kotlin-maven-plugin/pom.xml
+++ b/libraries/tools/kotlin-maven-plugin/pom.xml
@@ -92,25 +92,25 @@
             <artifactId>trove4j</artifactId>
             <version>${project.version}</version>
         </dependency>
-<!--
-        <dependency>
-            <groupId>net.sf.trove4j</groupId>
-            <artifactId>trove4j</artifactId>
-            <version>3.0.2</version>
-        </dependency>
--->
+        <!--
+                <dependency>
+                    <groupId>net.sf.trove4j</groupId>
+                    <artifactId>trove4j</artifactId>
+                    <version>3.0.2</version>
+                </dependency>
+        -->
         <dependency>
             <groupId>org.jetbrains.kotlin</groupId>
             <artifactId>picocontainer</artifactId>
             <version>${project.version}</version>
         </dependency>
-<!--
-        <dependency>
-            <groupId>org.picocontainer</groupId>
-            <artifactId>picocontainer</artifactId>
-            <version>2.9</version>
-        </dependency>
--->
+        <!--
+                <dependency>
+                    <groupId>org.picocontainer</groupId>
+                    <artifactId>picocontainer</artifactId>
+                    <version>2.9</version>
+                </dependency>
+        -->
 
 
         <!-- for JS generation -->
@@ -124,6 +124,14 @@
         <sourceDirectory>src/main/java</sourceDirectory>
         <testSourceDirectory>src/test/java</testSourceDirectory>
 
+        <resources>
+            <resource>
+                <!-- jdkHeaders -->
+                <directory>${kotlin-sdk}/lib/alt</directory>
+                <filtering>false</filtering>
+            </resource>
+        </resources>
+
         <plugins>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
diff --git a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinCompileMojoBase.java b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinCompileMojoBase.java
index c15ed7a6d5f..81208b0f249 100644
--- a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinCompileMojoBase.java
+++ b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinCompileMojoBase.java
@@ -17,6 +17,8 @@
 package org.jetbrains.kotlin.maven;
 
 import com.google.common.base.Joiner;
+import com.google.common.io.Files;
+import com.google.common.io.Resources;
 import org.apache.maven.plugin.AbstractMojo;
 import org.apache.maven.plugin.MojoExecutionException;
 import org.apache.maven.plugin.MojoFailureException;
@@ -25,6 +27,8 @@ import org.jetbrains.jet.cli.CompilerArguments;
 import org.jetbrains.jet.cli.KotlinCompiler;
 
 import java.io.File;
+import java.io.IOException;
+import java.net.URL;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -133,8 +137,8 @@ public abstract class KotlinCompileMojoBase extends AbstractMojo {
      */
     protected abstract void configureCompilerArguments(CompilerArguments arguments) throws MojoExecutionException;
 
-    protected static void configureBaseCompilerArguments(Log log, CompilerArguments arguments, String module,
-                                                         List<String> sources, List<String> classpath, String output) throws MojoExecutionException {
+    protected void configureBaseCompilerArguments(Log log, CompilerArguments arguments, String module,
+                                                  List<String> sources, List<String> classpath, String output) throws MojoExecutionException {
         // don't include runtime, it should be in maven dependencies
         arguments.mode = "stdlib";
 
@@ -162,5 +166,42 @@ public abstract class KotlinCompileMojoBase extends AbstractMojo {
 
         log.info("Classes directory is " + output);
         arguments.setOutputDir(output);
+
+        arguments.jdkHeaders = getJdkHeaders().getPath();
+        log.debug("Using jdk headers from " + arguments.jdkHeaders);
+    }
+
+    private File jdkHeadersPath;
+
+    protected File getJdkHeaders() {
+        if (jdkHeadersPath != null)
+            return jdkHeadersPath;
+
+        try {
+            jdkHeadersPath = extractJdkHeaders();
+
+            if (jdkHeadersPath == null)
+                throw new RuntimeException("Can't find kotlin jdk headers in maven plugin resources");
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+
+        return jdkHeadersPath;
+    }
+
+    private File extractJdkHeaders() throws IOException {
+        final String kotlin_jdk_headers = "kotlin-jdk-headers.jar";
+
+        final URL jdkHeadersResource = Resources.getResource(kotlin_jdk_headers);
+        if (jdkHeadersResource == null)
+            return null;
+
+        final File jdkHeadersTempDir = Files.createTempDir();
+        jdkHeadersTempDir.deleteOnExit();
+
+        final File jdkHeadersFile = new File(jdkHeadersTempDir, kotlin_jdk_headers);
+        Files.copy(Resources.newInputStreamSupplier(jdkHeadersResource), jdkHeadersFile);
+
+        return jdkHeadersFile;
     }
 }