make tree-substitution more specific

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/common-functions b/lib/common-functions
index fde6c91..b6b9095 100755
--- a/lib/common-functions
+++ b/lib/common-functions
@@ -458,7 +458,7 @@ extract_source_directory() {
   if [ -n "${revision}" ] \
   && [ "${revision}" != '0000000000000000000000000000000000000000' ]; then
     local pkgbase_translated
-    for substitution in '' 's@+@plus@g' 's@+@-@g' 's@tree@unix-tree@'; do
+    for substitution in '' 's@+@plus@g' 's@+@-@g' 's@^tree$@unix-tree@'; do
       pkgbase_translated=$(
         printf '%s\n' "${pkgbase}" \
         | sed "${substitution}"