diff --git a/drivers/isdn/mISDN/layer1.c b/drivers/isdn/mISDN/layer1.c
index fced1a2755f8..4a55d6394e42 100644
--- a/drivers/isdn/mISDN/layer1.c
+++ b/drivers/isdn/mISDN/layer1.c
@@ -21,7 +21,7 @@
 #include "layer1.h"
 #include "fsm.h"
 
-static int *debug;
+static u_int *debug;
 
 struct layer1 {
 	u_long			Flags;
diff --git a/drivers/isdn/mISDN/layer2.c b/drivers/isdn/mISDN/layer2.c
index a7915a156c04..77fca3b061de 100644
--- a/drivers/isdn/mISDN/layer2.c
+++ b/drivers/isdn/mISDN/layer2.c
@@ -18,7 +18,7 @@
 #include "fsm.h"
 #include "layer2.h"
 
-static int *debug;
+static u_int *debug;
 
 static
 struct Fsm l2fsm = {NULL, 0, 0, NULL, NULL};
diff --git a/drivers/isdn/mISDN/socket.c b/drivers/isdn/mISDN/socket.c
index e5a20f9542d1..37a2de18cfd0 100644
--- a/drivers/isdn/mISDN/socket.c
+++ b/drivers/isdn/mISDN/socket.c
@@ -18,7 +18,7 @@
 #include <linux/mISDNif.h>
 #include "core.h"
 
-static int	*debug;
+static u_int	*debug;
 
 static struct proto mISDN_proto = {
 	.name		= "misdn",
diff --git a/drivers/isdn/mISDN/timerdev.c b/drivers/isdn/mISDN/timerdev.c
index 875fabe16e36..a8d1d9fb89e2 100644
--- a/drivers/isdn/mISDN/timerdev.c
+++ b/drivers/isdn/mISDN/timerdev.c
@@ -24,7 +24,7 @@
 #include <linux/module.h>
 #include <linux/mISDNif.h>
 
-static int	*debug;
+static u_int	*debug;
 
 
 struct mISDNtimerdev {
@@ -274,7 +274,7 @@ static struct miscdevice mISDNtimer = {
 };
 
 int
-mISDN_inittimer(int *deb)
+mISDN_inittimer(u_int *deb)
 {
 	int	err;