diff --git a/newdracut.sh b/newdracut.sh
index 54a7e0a..c6ab573 100755
--- a/newdracut.sh
+++ b/newdracut.sh
@@ -51,7 +51,7 @@ if rpm -ivh --define "_srcrpmdir $PWD" --define "_specdir $PWD" --define "_sourc
             echo "* $(LANG='C' date '+%a %b %d %Y') $(git config user.name) <$(git config user.email)> - ${new_version}-${new_release_full}"
 
             for ((i=old_release; i<new_release; i++)); do
-                subject=$(grep '^Subject: ' +(0)$i.patch | head -1)
+                subject=$(grep -E '^Subject: ' "`printf "%04d" $i`.patch" | head -1)
                 subject="${subject#*\[PATCH\]}"
 
                 if [ -n "$subject" ] && [ -z "$(echo $subject | grep '^ci: ')" ]; then
@@ -73,7 +73,7 @@ if rpm -ivh --define "_srcrpmdir $PWD" --define "_specdir $PWD" --define "_sourc
 
     msg="Resolves: $(
     for ((i=old_release; i<new_release; i++)); do
-        resolves=$(grep '^Resolves: ' +(0)$i.patch | head -1)
+        resolves=$(grep '^Resolves: ' "`printf "%04d" $i`.patch" | head -1)
         if [ -n "$resolves" ]; then
             echo "${resolves#Resolves: }"
         fi