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-rwxr-xr-xusr/bin/easybox_keygen2
1 files changed, 1 insertions, 1 deletions
diff --git a/usr/bin/easybox_keygen b/usr/bin/easybox_keygen
index e9a9beca..daedb602 100755
--- a/usr/bin/easybox_keygen
+++ b/usr/bin/easybox_keygen
@@ -5,7 +5,7 @@
# www.wotan.cc
#
-MAC=$1
+MAC=${1?\$1 must be MAC}
# Take the last 2 Bytes of the MAC-Address (0B:EC), and convert it to decimal.