diff --git a/python-3.7.3-0.build.sh b/python-3.7.3-0.build.sh
index d6e463e..3f061e9 100755
--- a/python-3.7.3-0.build.sh
+++ b/python-3.7.3-0.build.sh
@@ -10,7 +10,7 @@ set -xe
 umask 022
 
 BUILD_TMPDIR=/dev/shm/$PKG-$VERSION-$BUILD.build.tmp
-test -d $BUILD_TMPDIR && rm -rf $BUILD_TMPDIR
+test -d $BUILD_TMPDIR && ( chmod -R u+rwx $BUILD_TMPDIR || true ; rm -rf $BUILD_TMPDIR )
 mkdir -p $BUILD_TMPDIR/home
 export TMPDIR=$BUILD_TMPDIR
 export HOME=$BUILD_TMPDIR/home