diff --git a/lib/smp_aac_io.c b/lib/smp_aac_io.c
index 110d0cc..ef91f71 100644
--- a/lib/smp_aac_io.c
+++ b/lib/smp_aac_io.c
@@ -6,6 +6,7 @@
 #include <stddef.h>
 #include <fcntl.h>
 #include <unistd.h>
+#include <sys/sysmacros.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/ioctl.h>
diff --git a/lib/smp_lin_bsg.c b/lib/smp_lin_bsg.c
index 0995ded..e19a166 100644
--- a/lib/smp_lin_bsg.c
+++ b/lib/smp_lin_bsg.c
@@ -40,6 +40,7 @@
 #include <fcntl.h>
 //#include <curses.h>
 #include <unistd.h>
+#include <sys/sysmacros.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/ioctl.h>
diff --git a/lib/smp_mptctl_io.c b/lib/smp_mptctl_io.c
index 5512913..def386d 100644
--- a/lib/smp_mptctl_io.c
+++ b/lib/smp_mptctl_io.c
@@ -15,6 +15,7 @@
 #include <fcntl.h>
 //#include <curses.h>
 #include <unistd.h>
+#include <sys/sysmacros.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/ioctl.h>