diff --git a/drivers/misc/ibmasm/command.c b/drivers/misc/ibmasm/command.c
index 276d3fb..e203173 100644
--- a/drivers/misc/ibmasm/command.c
+++ b/drivers/misc/ibmasm/command.c
@@ -22,6 +22,7 @@
  *
  */
 
+#include <linux/sched.h>
 #include "ibmasm.h"
 #include "lowlevel.h"
 
diff --git a/drivers/misc/ibmasm/event.c b/drivers/misc/ibmasm/event.c
index 68a0a5b..572d41f 100644
--- a/drivers/misc/ibmasm/event.c
+++ b/drivers/misc/ibmasm/event.c
@@ -22,6 +22,7 @@
  *
  */
 
+#include <linux/sched.h>
 #include "ibmasm.h"
 #include "lowlevel.h"
 
diff --git a/drivers/misc/ibmasm/r_heartbeat.c b/drivers/misc/ibmasm/r_heartbeat.c
index bec9e2c..2de487a 100644
--- a/drivers/misc/ibmasm/r_heartbeat.c
+++ b/drivers/misc/ibmasm/r_heartbeat.c
@@ -20,6 +20,7 @@
  *
  */
 
+#include <linux/sched.h>
 #include "ibmasm.h"
 #include "dot_command.h"