diff --git a/src/dos/dos.cpp b/src/dos/dos.cpp
index 710a7f92..c08ae71f 100644
--- a/src/dos/dos.cpp
+++ b/src/dos/dos.cpp
@@ -28,6 +28,7 @@
 #include "regs.h"
 #include "dos_inc.h"
 #include "setup.h"
+#include "cpu.h"
 
 DOS_Block dos;
 DOS_InfoBlock dos_infoblock;
@@ -861,11 +862,12 @@ static Bitu DOS_27Handler(void)
 	return CBRET_NONE;
 }
 static Bitu DOS_25Handler(void) {
+	flags.type=t_UNKNOWN;
 	if(Drives[reg_al]==0){
 		reg_ax=0x8002;
-		CALLBACK_SCF(true);
+		flags.cf=true;
 	}else{
-		CALLBACK_SCF(false);
+		flags.cf=false;
 		reg_ax=0;
 		if((reg_cx != 1) ||(reg_dx != 1))
 			LOG(LOG_DOSMISC,"int 25 called but not as diskdetection");
@@ -874,11 +876,13 @@ static Bitu DOS_25Handler(void) {
 }
 static Bitu DOS_26Handler(void) {
 	LOG(LOG_DOSMISC,"int 26 called: hope for the best!");
+	flags.type=t_UNKNOWN;
 	if(Drives[reg_al]==0){
+
 		reg_ax=0x8002;
-		CALLBACK_SCF(true);
+		flags.cf=true;
 	}else{
-		CALLBACK_SCF(false);
+		flags.cf=false;
 		reg_ax=0;
 	}
     return CBRET_NONE;
@@ -912,7 +916,7 @@ void DOS_Init(Section* sec) {
 	RealSetVec(0x25,CALLBACK_RealPointer(call_25));
 	
 	call_26=CALLBACK_Allocate();
-	CALLBACK_Setup(call_26,DOS_21Handler,CB_RETF);
+	CALLBACK_Setup(call_26,DOS_26Handler,CB_RETF);
 	RealSetVec(0x26,CALLBACK_RealPointer(call_26));
 	
 	call_27=CALLBACK_Allocate();