diff --git a/build-src.sh b/build-src.sh
index dd7ea90..f360202 100755
--- a/build-src.sh
+++ b/build-src.sh
@@ -4,7 +4,7 @@
 # commit-db.rb list-valid nightly|GIT_DIR=/your/rust/dir/.git ./build-src.sh
 
 if [ $(uname) == 'Darwin' ]; then
-	alias tac='tail -f'
+	alias tac='tail -r'
 fi
 
 prompt_changes() {
diff --git a/functions.sh b/functions.sh
index 26fd5b2..85d3886 100644
--- a/functions.sh
+++ b/functions.sh
@@ -35,7 +35,7 @@ get_io_commits() {
 }
 
 get_patch_commits() {
-	find $PATCH_DIR -type f|xargs -n 1 basename|cut -d. -f1
+	find $PATCH_DIR -type f -print0|xargs -0 -n 1 basename|cut -d. -f1
 }
 
 prepare_version() {