diff --git a/net/lapb/lapb_iface.c b/net/lapb/lapb_iface.c
index bda96d1..d5d8d55 100644
--- a/net/lapb/lapb_iface.c
+++ b/net/lapb/lapb_iface.c
@@ -29,6 +29,7 @@
 #include <linux/inet.h>
 #include <linux/if_arp.h>
 #include <linux/skbuff.h>
+#include <linux/slab.h>
 #include <net/sock.h>
 #include <asm/uaccess.h>
 #include <asm/system.h>
diff --git a/net/lapb/lapb_in.c b/net/lapb/lapb_in.c
index 6762e7c..21904a0 100644
--- a/net/lapb/lapb_in.c
+++ b/net/lapb/lapb_in.c
@@ -27,6 +27,7 @@
 #include <linux/inet.h>
 #include <linux/netdevice.h>
 #include <linux/skbuff.h>
+#include <linux/slab.h>
 #include <net/sock.h>
 #include <asm/uaccess.h>
 #include <asm/system.h>
diff --git a/net/lapb/lapb_out.c b/net/lapb/lapb_out.c
index 339cc5f..c75a795 100644
--- a/net/lapb/lapb_out.c
+++ b/net/lapb/lapb_out.c
@@ -25,6 +25,7 @@
 #include <linux/net.h>
 #include <linux/inet.h>
 #include <linux/skbuff.h>
+#include <linux/slab.h>
 #include <net/sock.h>
 #include <asm/uaccess.h>
 #include <asm/system.h>
diff --git a/net/lapb/lapb_subr.c b/net/lapb/lapb_subr.c
index b827f47..43a2a7f 100644
--- a/net/lapb/lapb_subr.c
+++ b/net/lapb/lapb_subr.c
@@ -24,6 +24,7 @@
 #include <linux/net.h>
 #include <linux/inet.h>
 #include <linux/skbuff.h>
+#include <linux/slab.h>
 #include <net/sock.h>
 #include <asm/uaccess.h>
 #include <asm/system.h>