diff --git a/16-01-2023-grepkeys/greptoken.sh b/16-01-2023-grepkeys/greptoken.sh
index 06f2810..514ff98 100644
--- a/16-01-2023-grepkeys/greptoken.sh
+++ b/16-01-2023-grepkeys/greptoken.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-out=`find . -name '*.java' -exec grep '843339462' /dev/null {} + || echo 'empty'`
+out=`find . -name "*.java" -exec grep '843339462' /dev/null {} + || echo 'empty'`
 if [[ ["${out}" != "empty"] && "$(grep '\.java' <<< ${out})" ]]; then
     echo "${out}"
     echo "token found"