diff --git a/include/cbm510.h b/include/cbm510.h
index b6c8892b1..25ea07540 100644
--- a/include/cbm510.h
+++ b/include/cbm510.h
@@ -118,7 +118,7 @@
 
 
 /* The addresses of the static drivers */
-extern void cbm510_170c_mou[];
+extern void cbm510_inkwl_mou[];
 extern void cbm510_joy_mou[];   /* Referred to by mouse_static_stddrv[] */
 extern void cbm510_ram_emd[];
 extern void cbm510_std_joy[];   /* Referred to by joy_static_stddrv[] */
diff --git a/libsrc/cbm510/mou/cbm510-170c.s b/libsrc/cbm510/mou/cbm510-inkwl.s
similarity index 99%
rename from libsrc/cbm510/mou/cbm510-170c.s
rename to libsrc/cbm510/mou/cbm510-inkwl.s
index bf10cd24b..8502a7034 100644
--- a/libsrc/cbm510/mou/cbm510-170c.s
+++ b/libsrc/cbm510/mou/cbm510-inkwl.s
@@ -1,5 +1,7 @@
 ;
-; Driver for the Inkwell Systems 170-C lightpen.
+; Driver for the Inkwell Systems 170-C and 184-C lightpens.
+;
+; This driver reads only the main button on the 184-C.
 ;
 ; 2013-09-05, Greg King
 ;