diff --git a/test-readme.sh b/test-readme.sh
index a4ca90f..8701a33 100644
--- a/test-readme.sh
+++ b/test-readme.sh
@@ -2,7 +2,6 @@
 set -e
 
 MNEMONIC="elder major green sting survey canoe inmate funny bright jewel anchor volcano"
-XPRV="xprv9s21ZrQH143K46aCaxAxmT97r6rx9XBFf1gjWTi65Eb3QHjEpuvobGPpXYSyoQqQw5SQhrZpwFKVRSjrFjKDs4shbu7BwTXfVaPV8yF2gc8"
 
 poetry run bipsea --version
 
@@ -22,10 +21,10 @@ poetry run bipsea validate -f free -m "123456123456123456" | poetry run bipsea x
 
 poetry run bipsea validate -f free -m "$(cat input.txt)"
 
-poetry run bipsea xprv -x "$XPRV" | poetry run bipsea derive -a base85
+poetry run bipsea xprv -m "$MNEMONIC" | poetry run bipsea derive -a base85
 
- poetry run bipsea xprv -x "$XPRV" | poetry run bipsea derive -a mnemonic -t jpn -n 12
+poetry run bipsea xprv -m "$MNEMONIC" | poetry run bipsea derive -a mnemonic -t jpn -n 12
 
-poetry run bipsea xprv -x "$XPRV" | poetry run bipsea derive -a drng -n 1000
+poetry run bipsea xprv -m "$MNEMONIC" | poetry run bipsea derive -a drng -n 1000
 
-poetry run bipsea xprv -x "$XPRV" | poetry run bipsea derive -a dice -n 100 -s 6
+poetry run bipsea xprv -m "$MNEMONIC" | poetry run bipsea derive -a dice -n 100 -s 6