diff --git a/pdf-optimize.sh b/pdf-optimize.sh
index 41da97b..fe663bd 100755
--- a/pdf-optimize.sh
+++ b/pdf-optimize.sh
@@ -66,8 +66,8 @@ function yes_or_no
 {
 	read -p "$* [y/N]: " ans
 	case "$ans" in
-		[yY] | [yY]es )		return 0;;
-		* )					echo "Aborting"; return 1;;
+		[yY] | [yY]es )     return 0;;
+		* )                 echo "Aborting"; return 1;;
 	esac
 }