diff --git a/hash-files b/hash-files
index 1edc9c6..3c05160 100755
--- a/hash-files
+++ b/hash-files
@@ -34,13 +34,18 @@ create_list_of_files () {
 mdls_files () {
 	for file in $list_of_files; do
 		for line in $(mdls $file); do
+			old_IFS=$IFS
+			unset IFS
 			mdls_key=$(printf "%s" $line | cut -d '=' -f 1)
 			mdls_value=$(printf "%s" $line | cut -d '=' -f 2)
-			if $(echo $keys_of_interest | grep $mdls_key);then
+			if [[ " ${keys_of_interest[*]} " =~ " ${mdls_key} " ]];then
+				IFS=$old_IFS
 				printf "\n============================\nMDLS Key: %s\nMDLS Value: %s\n============================\n\n" $mdls_key $mdls_value
+				unset IFS
 			else
 				echo "Did not print!"
 			fi
+			IFS=$old_IFS
 		done
 
 	done