diff --git a/libraries/stdlib/js/build.gradle b/libraries/stdlib/js/build.gradle
index 202c4f50c5e..86a54f1419d 100644
--- a/libraries/stdlib/js/build.gradle
+++ b/libraries/stdlib/js/build.gradle
@@ -15,10 +15,13 @@ def builtinsSrcDir = "${buildDir}/builtin-sources"
 def builtinsSrcDir2 = "${buildDir}/builtin-sources-for-builtins"
 def commonSrcDir = "${projectDir}/../src/kotlin"
 def commonSrcDir2 = "${projectDir}/../common/src"
-def coroutinesJsSrcDir = "${projectDir}/../coroutines/js/src"
-def coroutinesExpJsSrcDir = "${projectDir}/../coroutines-experimental/js/src"
+def coroutinesCommonHSrcDir = "${rootDir}/libraries/stdlib/coroutines/common/src"
+def coroutinesCommonSrcDir = "${rootDir}/libraries/stdlib/coroutines/src"
+def coroutinesJsSrcDir = "${rootDir}/libraries/stdlib/coroutines/js/src"
+def coroutinesExpJsSrcDir = "${rootDir}/libraries/stdlib/coroutines-experimental/js/src"
 
 def builtinsDir = "${rootDir}/core/builtins"
+def unsignedCommonSrcDir = "${rootDir}/libraries/stdlib/unsigned/src"
 def experimentalSrcDir = "${rootDir}/libraries/stdlib/experimental"
 def experimentalJsModuleName = 'kotlin-experimental'
 def coroutinesJsModuleName = 'kotlin-stdlib-coroutines'
@@ -150,7 +153,7 @@ compileKotlin2Js {
         sourceMap = true
         sourceMapPrefix = "./"
         freeCompilerArgs += [
-            "-source-map-base-dirs", [builtinsSrcDir, jsSrcDir, commonSrcDir, commonSrcDir2].collect { file(it).absoluteFile }.join(File.pathSeparator),
+            "-source-map-base-dirs", [builtinsSrcDir, jsSrcDir, commonSrcDir, commonSrcDir2, coroutinesJsSrcDir, coroutinesCommonSrcDir, coroutinesCommonHSrcDir, unsignedCommonSrcDir].collect { file(it).absoluteFile }.join(File.pathSeparator),
             "-Xuse-experimental=kotlin.Experimental",
             "-Xuse-experimental=kotlin.ExperimentalMultiplatform",
             "-Xuse-experimental=kotlin.contracts.ExperimentalContracts",
@@ -252,7 +255,7 @@ task compileJs(type: JavaExec) {
             if (prefixToRemove != null) sourcePath.substring(prefixToRemove.length()) else sourcePath
         }
 
-        def sourceMapSourcesBaseDirs = [jsSrcDir, jsSrcJsDir, builtinsSrcDir, commonSrcDir, commonSrcDir2, projectDir, experimentalSrcDir]
+        def sourceMapSourcesBaseDirs = [jsSrcDir, jsSrcJsDir, builtinsSrcDir, commonSrcDir, commonSrcDir2, projectDir, experimentalSrcDir,  unsignedCommonSrcDir, coroutinesJsSrcDir, coroutinesCommonSrcDir, coroutinesCommonHSrcDir]
 
         sourceMap.sourcesContent = sourceMap.sources.collect { sourceName ->
             def text = sourceMapSourcesBaseDirs.collect { file("$it/$sourceName") }.find { it.exists() }?.text