diff --git a/documentation/Makefile.in b/documentation/Makefile.in
index a505f68eec9ffd88d36503b8364b461c972a1d20..6c367b5c47c00f60482e266e6e3bca74122f2dc9 100644
--- a/documentation/Makefile.in
+++ b/documentation/Makefile.in
@@ -34,6 +34,7 @@ BOOK_SRCS = \
 	printing.sgml \
 	registry.sgml \
 	running.sgml \
+	testing.sgml \
 	tools.sgml \
 	wine-doc.sgml \
 	winelib-bindlls.sgml \