diff --git a/install.sh b/install.sh
index 95fd728..dd040aa 100755
--- a/install.sh
+++ b/install.sh
@@ -86,7 +86,9 @@ ensure_file_from_example $SENTRY_EXTRA_REQUIREMENTS
 echo ""
 echo "Generating secret key..."
 # This is to escape the secret key to be used in sed below
-SECRET_KEY=$(head /dev/urandom | tr -dc "a-z0-9@#%^&*(-_=+)" | head -c 50 | sed -e 's/[\/&]/\\&/g')
+# Note the need to set LC_ALL=C due to BSD tr and sed always trying to decode
+# whatever is passed to them. Kudos to https://stackoverflow.com/a/23584470/90297
+SECRET_KEY=$(export LC_ALL=C; head /dev/urandom | tr -dc "a-z0-9@#%^&*(-_=+)" | head -c 50 | sed -e 's/[\/&]/\\&/g')
 sed -i -e 's/^system.secret-key:.*$/system.secret-key: '"'$SECRET_KEY'"'/' $SENTRY_CONFIG_YML
 echo "Secret key written to $SENTRY_CONFIG_YML"