diff --git a/build.sh b/build.sh
index 39eeb1062147922e1219d2c73fe57e38d613b680..ee2f195a65cc26d21a16f6a3681d538af977d9a6 100755
--- a/build.sh
+++ b/build.sh
@@ -457,6 +457,8 @@ distclean()
 	rm -rf 3rdparty || failure
 	rm -rf build || failure
 	rm -rf install || failure
+	rm -rf doc/html || failure
+	rm -f doc/*.tag || failure
 
 	rm -f .lastbuild || failure
 }