diff --git a/alpine/alpine-configure-git.sh b/alpine/alpine-configure-git.sh
index 83f5302..005ac3b 100755
--- a/alpine/alpine-configure-git.sh
+++ b/alpine/alpine-configure-git.sh
@@ -1,8 +1,8 @@
 #!/bin/ash
 
-if [ $(id -u) = 0 ]; then
+if [[ $(id -u) = 0 ]]; then
     echo "Please do NOT run as root!"
-exit 1
+    exit 1
 fi
 
 # git config
diff --git a/alpine/alpine-user-customizations.sh b/alpine/alpine-user-customizations.sh
index 419c65a..f503971 100755
--- a/alpine/alpine-user-customizations.sh
+++ b/alpine/alpine-user-customizations.sh
@@ -1,8 +1,8 @@
 #!/bin/bash
 
-if [ $(id -u) = 0 ]; then
+if [[ $(id -u) = 0 ]]; then
     echo "Please do NOT run as root!"
-exit 1
+    exit 1
 fi
 
 # add aliases