diff --git a/src/drivers/isr33.pas b/src/drivers/isr33.pas
index c18286c8..f05ef8a0 100644
--- a/src/drivers/isr33.pas
+++ b/src/drivers/isr33.pas
@@ -38,11 +38,12 @@ begin
             Hooks[i](void(inb($60)));
         end;
     end;
-    outb($20, $20);
+    outb($20, $20); 
 end;
 
 procedure register();
 begin
+    memset(uint32(@Hooks[0]), 0, sizeof(pp_hook_method)*MAX_HOOKS);
     IDT.set_gate(33, uint32(@Main), $08, ISR_RING_0);
 end;