diff --git a/make-darwin-installer.sh b/make-darwin-installer.sh
index d8f0a6ee71..2b1d7386d0 100644
--- a/make-darwin-installer.sh
+++ b/make-darwin-installer.sh
@@ -1,9 +1,9 @@
 #!/bin/sh
 set -e
 version=`./setup.py --version`
+rm -rf build dist
 ./setup.py compile_catalog
 ./setup-freeze.py bdist_mac
-rm -rf dist
 mkdir dist
 mv build/Tryton.app dist/
 for f in CHANGELOG COPYRIGHT LICENSE; do
diff --git a/make-win32-installer.sh b/make-win32-installer.sh
index c07da1f546..510ed853d3 100644
--- a/make-win32-installer.sh
+++ b/make-win32-installer.sh
@@ -2,6 +2,7 @@
 set -e
 version=`./setup.py --version`
 series=${version%.*}
+rm -rf build dist
 ./setup.py compile_catalog
 ./setup-freeze.py install_exe -d dist
 makensis -DVERSION=${version} -DSERIES=${series} setup.nsi