diff --git a/tools/semver_git_tag b/tools/semver_git_tag
index c6524d6..258963b 100755
--- a/tools/semver_git_tag
+++ b/tools/semver_git_tag
@@ -124,19 +124,20 @@ if [[ -z $COMMAND ]]; then
 	read -rn1 input
 	echo
 	case "$input" in
-		'M')
-			COMMAND='major'
-			;;
-		'm')
-			COMMAND='minor'
-			;;
-		'p')
-			COMMAND='patch'
-		*)
-			echo >&2 "Unknown option: $input"
-			exit 3
-			;;
-		esac	
+	M)
+		COMMAND='major'
+		;;
+	m)
+		COMMAND='minor'
+		;;
+	p)
+		COMMAND='patch'
+		;;
+	*)
+		echo >&2 "Unknown option: $input"
+		exit 3
+		;;
+	esac
 fi
 
 case $COMMAND in