diff --git a/Shared_Includes b/Shared_Includes
index 3744776..2308a92 160000
--- a/Shared_Includes
+++ b/Shared_Includes
@@ -1 +1 @@
-Subproject commit 374477690571809e7318bd4279bc7da120b6c492
+Subproject commit 2308a92341b8cf17b710c05123feec4d4dc55609
diff --git a/src/bios/exp/EXP.asm b/src/bios/exp/EXP.asm
index c008f93..5134b63 100644
--- a/src/bios/exp/EXP.asm
+++ b/src/bios/exp/EXP.asm
@@ -1035,14 +1035,12 @@ PORTS_INIT:
 .clean_kbd_buf:
 	IN	A,(Z84.SIO.Ch_A.Ctrl)
 	AND	1
-	JR	Z,1F
+	RET	Z
 	IN	A,(Z84.SIO.Ch_A.Data)
 	JR	.clean_kbd_buf
-1:	;exit from .clean_kbd_buf
+;	RET	PORTS_INIT.clean_kbd_buf
 ;---------------------------------------
 
-	RET
-
 ;-----------------------------------------------------------------------;
 
 
diff --git a/src/bios/rom/SETUP/MAIN.asm b/src/bios/rom/SETUP/MAIN.asm
index 5255550..1b58272 100644
--- a/src/bios/rom/SETUP/MAIN.asm
+++ b/src/bios/rom/SETUP/MAIN.asm
@@ -866,6 +866,7 @@ RECOVERYstart:
 
 PrepareToBOOT:
         CALL	INT_OFF
+	CALL	PORTS_INIT.clean_kbd_buf
 	CALL	G_VALUE
 	LD	B,0
         ;   FDD