diff --git a/src/cpu.rs b/src/cpu.rs
index 9c2814e..8fa7fa9 100644
--- a/src/cpu.rs
+++ b/src/cpu.rs
@@ -1716,7 +1716,6 @@ impl CPU {
                 self.registers.increment(Register::PC, 2);
             },
             Opcode::NOP => self.registers.increment(Register::PC, 1),
-            // _ => println!("Illegal instruction"),
             Opcode::IllegalInstruction => {panic!("Illegal instruction");},
             _ => {panic!("Illegal instruction");},
         };
diff --git a/src/ppu.rs b/src/ppu.rs
index 70eded6..d46e02b 100644
--- a/src/ppu.rs
+++ b/src/ppu.rs
@@ -1,3 +1,12 @@
+struct ColorPalette(u8, u8, u8, u8);
+
+struct Tile {
+
+}
+
+struct Sprite {
+}
+
 pub struct PPU;
 
 impl PPU {