diff --git a/flx/fct1.c b/flx/fct1.c
index b0c9e5e..c3e8eef 100644
--- a/flx/fct1.c
+++ b/flx/fct1.c
@@ -7,6 +7,9 @@
 #include <sys/stat.h>
 #include <unistd.h>
 #include <sys/types.h>
+#if defined __GNU_LIBRARY__
+#include <sys/sysmacros.h>
+#endif
 #include <fcntl.h>
 #include <dirent.h>
 #include <string.h>
diff --git a/init/init.c b/init/init.c
index bd4edbd..4aaabd7 100644
--- a/init/init.c
+++ b/init/init.c
@@ -68,6 +68,9 @@
 #include <stdio.h>
 #include <sys/stat.h>
 #include <sys/types.h>
+#if defined __GNU_LIBRARY__
+#include <sys/sysmacros.h>
+#endif
 #include <sys/wait.h>
 #include <fcntl.h>
 #include <unistd.h>
diff --git a/init/mkdev.c b/init/mkdev.c
index f75e449..0845389 100644
--- a/init/mkdev.c
+++ b/init/mkdev.c
@@ -42,6 +42,9 @@
 #ifndef NOLIBC
 #include <stdio.h>
 #include <sys/types.h>
+#if defined __GNU_LIBRARY__
+#include <sys/sysmacros.h>
+#endif
 #include <fcntl.h>
 #include <unistd.h>
 #include <string.h>
diff --git a/signfs/signfs.c b/signfs/signfs.c
index 5d542f4..d18cc44 100644
--- a/signfs/signfs.c
+++ b/signfs/signfs.c
@@ -27,6 +27,9 @@
 
 #include <stdio.h>
 #include <sys/types.h>
+#if defined __GNU_LIBRARY__
+#include <sys/sysmacros.h>
+#endif
 #include <fcntl.h>
 #include <dirent.h>
 #include <string.h>