diff --git a/src/d_main/mod.rs b/src/d_main/mod.rs
index fb6cf80..5ffb0b0 100644
--- a/src/d_main/mod.rs
+++ b/src/d_main/mod.rs
@@ -12,6 +12,7 @@ use crate::m_misc::M_LoadDefaults;
 
 use crate::v_video::V_Init;
 use crate::w_wad::{W_CheckNumForName, W_InitMultipleFiles};
+use crate::z_zone::Z_Init;
 
 use crate::doomdef::{
     VERSION,
@@ -408,11 +409,9 @@ pub fn D_DoomMain() {
     println!("M_LoadDefaults: Load system defaults.");
     M_LoadDefaults();
 
-    /* TODO: Implement subsytem inits
-    
     println!("Z_init: Init zone memory allocation daemon.");
-    Z_Init();    
-     */
+    Z_Init();
+
     println!("W_Init: Init WADfiles");
     W_InitMultipleFiles(DOOMGLOBALS::with_ref(|g| g.wadfiles.clone()));  // we are loading so how cares about a borrow