diff --git a/script/installpackages b/script/installpackages
index aee5f48..e9c5bc0 100755
--- a/script/installpackages
+++ b/script/installpackages
@@ -2,7 +2,7 @@
 #
 # Install packages for a new Arch or Manjaro installation. Requires sudo
 
-if [[ $euid > 0 ]]; then
+if [[ $EUID > 0 ]]; then
   echo "requires administrative privileges"
   exit 1
 fi
diff --git a/script/wgdown b/script/wgdown
index 4fe4f66..842e8ac 100755
--- a/script/wgdown
+++ b/script/wgdown
@@ -4,7 +4,7 @@
 
 set -e
 
-if [[ $euid > 0 ]]; then
+if [[ $EUID > 0 ]]; then
   echo "requires administrative privileges"
   exit 1
 fi
diff --git a/script/wgup b/script/wgup
index 6fef1f8..670f73a 100755
--- a/script/wgup
+++ b/script/wgup
@@ -4,7 +4,7 @@
 
 set -e
 
-if [[ $euid > 0 ]]; then
+if [[ $EUID > 0 ]]; then
   echo "requires administrative privileges"
   exit 1
 fi