diff --git a/lib/other/Makefile.in b/lib/other/Makefile.in
index 0528a068b..0d7356772 100644
--- a/lib/other/Makefile.in
+++ b/lib/other/Makefile.in
@@ -5,24 +5,25 @@ CFLAGS="-O -D_MINIX -D_POSIX_SOURCE -I../../servers"
 LIBRARIES=libc
 
 libc_FILES=" \
+	__pm_findproc.c \
 	_brk.c \
-	_sbrk.c \
 	_cprofile.c \
 	_devctl.c \
-	__pm_findproc.c \
 	_getdents.c \
 	_getnpid.c \
-	_getsigset.c \
 	_getnprocnr.c \
 	_getpprocnr.c \
 	_getprocnr.c \
+	_getsigset.c \
 	_getsysinfo.c \
 	_lseek64.c \
+	_mapdriver5.c \
 	_reboot.c \
+	_sbrk.c \
 	_seekdir.c \
-	_sysuname.c \
 	_sprofile.c \
 	_svrctl.c \
+	_sysuname.c \
 	asynchio.c \
 	basename.c \
 	bcmp.c \
diff --git a/lib/other/_mapdriver5.c b/lib/other/_mapdriver5.c
new file mode 100644
index 000000000..7f3051b5f
--- /dev/null
+++ b/lib/other/_mapdriver5.c
@@ -0,0 +1,22 @@
+#include <lib.h>
+#define mapdriver5	_mapdriver5
+#include <unistd.h>
+
+
+PUBLIC int mapdriver5(label, len, major, dev_style, force)
+char *label;
+size_t len;
+int major;
+int dev_style;
+int force;
+{
+  message m;
+  m.m2_p1 = label;
+  m.m2_l1 = len;
+  m.m2_i1 = major;
+  m.m2_i2 = dev_style;
+  m.m2_i3 = force;
+  if (_syscall(FS, MAPDRIVER, &m) < 0) return(-1);
+  return(0);
+}
+