diff --git a/src/PackageCompiler.jl b/src/PackageCompiler.jl
index c58ddf5f..48bb8d28 100644
--- a/src/PackageCompiler.jl
+++ b/src/PackageCompiler.jl
@@ -1,5 +1,7 @@
 module PackageCompiler
 
+# Hello world.
+
 using Base: active_project
 using Libdl: Libdl
 using Pkg: Pkg