diff --git a/configure.in b/configure.in
index a4a689fcb..b0aaa81fa 100644
--- a/configure.in
+++ b/configure.in
@@ -247,6 +247,7 @@ camlibs/Makefile
 camlibs/agfa/Makefile
 camlibs/barbie/Makefile
 camlibs/canon/Makefile
+camlibs/canon/doc/Makefile
 camlibs/casio/Makefile
 camlibs/digita/Makefile
 camlibs/dimera/Makefile