diff --git a/build-package.sh b/build-package.sh
index cb60c4ec9..8ac225203 100755
--- a/build-package.sh
+++ b/build-package.sh
@@ -3,6 +3,10 @@
 
 set -e -o pipefail -u
 
+if [ "$(uname -o)" = Android ]; then
+	termux_error_exit "On-device builds are not supported - see README.md"
+fi
+
 # Lock file to prevent parallel running in the same environment.
 TERMUX_BUILD_LOCK_FILE="/tmp/.termux-build.lck"
 if [ ! -e "$TERMUX_BUILD_LOCK_FILE" ]; then
diff --git a/scripts/build/termux_error_exit.sh b/scripts/build/termux_error_exit.sh
index 487a19112..99f14a3b1 100644
--- a/scripts/build/termux_error_exit.sh
+++ b/scripts/build/termux_error_exit.sh
@@ -2,7 +2,3 @@ termux_error_exit() {
 	echo "ERROR: $*" 1>&2
 	exit 1
 }
-
-if [ "$(uname -o)" = Android ]; then
-	termux_error_exit "On-device builds are not supported - see README.md"
-fi