diff --git a/bin/packages/build.js b/bin/packages/build.js
index 02009c1e4a4d3d..8a13f8f10b048d 100755
--- a/bin/packages/build.js
+++ b/bin/packages/build.js
@@ -166,7 +166,7 @@ function buildJsFileFor( file, silent, environment ) {
 	const destPath = getBuildPath( file, buildDir );
 	const babelOptions = getBabelConfig( environment );
 	babelOptions.sourceMaps = true;
-	babelOptions.sourceFileName = file;
+	babelOptions.sourceFileName = file.replace( PACKAGES_DIR, '@wordpress' );
 
 	mkdirp.sync( path.dirname( destPath ) );
 	const transformed = babel.transformFileSync( file, babelOptions );