diff --git a/macos-guest-virtualbox.sh b/macos-guest-virtualbox.sh
index ddd9308..988db6e 100755
--- a/macos-guest-virtualbox.sh
+++ b/macos-guest-virtualbox.sh
@@ -108,8 +108,8 @@ if [[ -n "${BASH_VERSION}" && -n "${ZSH_VERSION}" ]]; then
     exit
 elif [[ -n "${BASH_VERSION}" ]]; then
     if [[ ! ( "${BASH_VERSION:0:1}" -ge 5
-             || "${BASH_VERSION:0:3}" =~ 4\.[3-9]
-             || "${BASH_VERSION:0:4}" =~ 4\.[12][0-9] ) ]]; then
+              || "${BASH_VERSION:0:3}" =~ 4\.[3-9]
+              || "${BASH_VERSION:0:4}" =~ 4\.[12][0-9] ) ]]; then
         echo "Please execute this script with Bash 4.3 or higher, or zsh 5.5 or higher."
         if [[ -n "$(sw_vers 2>/dev/null)" ]]; then
             echo "macOS detected. Make sure the script is not executed with"
@@ -119,10 +119,10 @@ elif [[ -n "${BASH_VERSION}" ]]; then
     fi
 elif [[ -n "${ZSH_VERSION}" ]]; then
     if [[ ( "${ZSH_VERSION:0:1}" -ge 6 
-           || "${ZSH_VERSION:0:3}" =~ 5\.[5-9]
-           || "${ZSH_VERSION:0:4}" =~ 5\.[1-4][0-9] ) ]]; then
-    # make zsh parse the script (almost) like bash
-    setopt extendedglob sh_word_split ksh_arrays posix_argzero nullglob bsd_echo
+            || "${ZSH_VERSION:0:3}" =~ 5\.[5-9]
+            || "${ZSH_VERSION:0:4}" =~ 5\.[1-4][0-9] ) ]]; then
+        # make zsh parse the script (almost) like bash
+        setopt extendedglob sh_word_split ksh_arrays posix_argzero nullglob bsd_echo
     else
         echo "Please execute this script with zsh version 5.5 or higher."
         exit