diff --git a/buildall.sh b/buildall.sh
index 03fce7b..57c05e9 100644
--- a/buildall.sh
+++ b/buildall.sh
@@ -1 +1 @@
-ls -d ./*/ | xargs -n1 sh -c 'if [ -e $0Makefile ]; then echo "Building $0" ; cd $0 ; make release; fi'
\ No newline at end of file
+ls -d ./*/ | xargs -n1 sh -c 'if [ -e $0Makefile ]; then echo "Building $0" ; cd $0 ; make clean ; make release; fi'
\ No newline at end of file