diff --git a/inc/chardev.h b/inc/chardev.h
new file mode 100644
index 0000000..f6aeeae
--- /dev/null
+++ b/inc/chardev.h
@@ -0,0 +1,7 @@
+LispPTR CHAR_openfile(LispPTR *args);
+LispPTR CHAR_closefile(LispPTR *args);
+LispPTR CHAR_ioctl(LispPTR *args);
+LispPTR CHAR_bin(int id, LispPTR errn);
+LispPTR CHAR_bout(int id, LispPTR ch, LispPTR errn);
+LispPTR CHAR_bins(LispPTR *args);
+LispPTR CHAR_bouts(LispPTR *args);
diff --git a/src/chardev.c b/src/chardev.c
index 33a3136..01d96b8 100644
--- a/src/chardev.c
+++ b/src/chardev.c
@@ -61,6 +61,7 @@ static char *id = "$Id: chardev.c,v 1.2 1999/01/03 02:06:50 sybalsky Exp $ Copyr
 #include "locfile.h"
 #include "osmsg.h"
 #include "dbprint.h"
+#include "chardev.h"
 
 #if defined(ISC) || defined(FREEBSD)
 #include <dirent.h>
diff --git a/src/subr.c b/src/subr.c
index 5f13f33..4cbf9ac 100644
--- a/src/subr.c
+++ b/src/subr.c
@@ -50,6 +50,7 @@ static char *id = "$Id: subr.c,v 1.3 1999/05/31 23:35:42 sybalsky Exp $ Copyrigh
 #include "dsk.h"
 #include "ufs.h"
 #include "dir.h"
+#include "chardev.h"
 
 extern LispPTR *PENDINGINTERRUPT68k;