diff --git a/sys/security/mac_biba/mac_biba.c b/sys/security/mac_biba/mac_biba.c
index 2a6fa715e6b1..9d10dfa7ac65 100644
--- a/sys/security/mac_biba/mac_biba.c
+++ b/sys/security/mac_biba/mac_biba.c
@@ -48,6 +48,7 @@
 #include <sys/conf.h>
 #include <sys/kernel.h>
 #include <sys/mac.h>
+#include <sys/malloc.h>
 #include <sys/mount.h>
 #include <sys/proc.h>
 #include <sys/systm.h>
diff --git a/sys/security/mac_mls/mac_mls.c b/sys/security/mac_mls/mac_mls.c
index a023ec7bbd86..f04507e57f8c 100644
--- a/sys/security/mac_mls/mac_mls.c
+++ b/sys/security/mac_mls/mac_mls.c
@@ -48,6 +48,7 @@
 #include <sys/conf.h>
 #include <sys/kernel.h>
 #include <sys/mac.h>
+#include <sys/malloc.h>
 #include <sys/mount.h>
 #include <sys/proc.h>
 #include <sys/systm.h>