diff --git a/k/pic.c b/k/pic.c
index 982e6c1..6045094 100644
--- a/k/pic.c
+++ b/k/pic.c
@@ -29,7 +29,7 @@ static void send_icw4(void)
 
 static void mask_irqs(void)
 {
-    outb(MASTER_PIC_B, 0xff);
+    outb(MASTER_PIC_B, 0xff ^ 0x2);
     outb(SLAVE_PIC_B, 0xff);
 }