diff --git a/src/main.d b/src/pegp/main.d
similarity index 75%
rename from src/main.d
rename to src/pegp/main.d
index e0cdd77..1ce868a 100644
--- a/src/main.d
+++ b/src/pegp/main.d
@@ -1,5 +1,6 @@
+module pegp.main;
 import std.stdio;
-import state;
+import pegp.state;
 
 int main(string[] args)
 {
diff --git a/src/state.d b/src/pegp/state.d
similarity index 98%
rename from src/state.d
rename to src/pegp/state.d
index 7224b75..9c77dad 100644
--- a/src/state.d
+++ b/src/pegp/state.d
@@ -1,3 +1,5 @@
+module pegp.state;
+
 class State
 {
     private int m_size;