diff --git a/cleanup.sh b/cleanup.sh
index c78c3fc..5c0046d 100755
--- a/cleanup.sh
+++ b/cleanup.sh
@@ -28,7 +28,8 @@
 .libs \
 libtool \
 ltmain.sh \
-missing
+missing \
+if/gen-*
 
 for subdir in ${subdirs}; do 
     if [ -x "${subdir}/cleanup.sh" ]; then