diff --git a/src/mmu.rs b/src/mmu.rs
index e59fc25f2b2fee65a0a4712e22c30af4e51be274..ab6afb8825d07bcfb9d96ba09e6406f3fef20b82 100644
--- a/src/mmu.rs
+++ b/src/mmu.rs
@@ -9,7 +9,7 @@ use crate::{
     ppu::Ppu,
     rom::Cartridge,
     serial::Serial,
-    timer::Timer, warnln,
+    timer::Timer,
 };
 
 pub const BOOT_SIZE_DMG: usize = 256;