diff --git a/Shared_Includes b/Shared_Includes
index 0fffd67..05f7d3a 160000
--- a/Shared_Includes
+++ b/Shared_Includes
@@ -1 +1 @@
-Subproject commit 0fffd6783d0cbdf3c6fae27d7ccbbabe151f849f
+Subproject commit 05f7d3a67995d05df130988c89e5c53dcfbd5cf8
diff --git a/TRDOS/TR_HDD_4.ASZ b/TRDOS/TR_HDD_4.ASZ
index 303a132..fab5e3d 100644
--- a/TRDOS/TR_HDD_4.ASZ
+++ b/TRDOS/TR_HDD_4.ASZ
@@ -69,7 +69,7 @@ HDD_SET:
 		;
 ; [x] new tr-hdd
 .check:		DI
-		LD	BC,SLOT3
+		LD	C,SLOT3
 		IN	B,(C)
 		LD	A,SYS_PAGE
 		OUT	(SLOT3),A