diff --git a/src/gpu.rs b/src/gb.rs
similarity index 100%
rename from src/gpu.rs
rename to src/gb.rs
diff --git a/src/lib.rs b/src/lib.rs
index 8ea00fdc6ca433f79cbcad3924223b3770509882..d39f50338014e48a99992e938adacbe2d66e5d88 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,3 +1,4 @@
 pub mod cpu
-pub mod gpu
+pub mod gb
 pub mod mmu
+pub mod ppu
diff --git a/src/ppu.rs b/src/ppu.rs
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391