diff --git a/c3l_membership/views.py b/c3l_membership/views.py
--- a/c3l_membership/views.py
+++ b/c3l_membership/views.py
@@ -77,7 +77,7 @@ def index():
             ).decode("utf-8")
         elif form.payment.data == "ethereum":
             price = subprocess.check_output(
-                [current_app.config["ETHERUM_CONVERSION_SCRIPT"], str(price)]
+                [current_app.config["ETHEREUM_CONVERSION_SCRIPT"], str(price)]
             ).decode("utf-8")
         elif form.payment.data == "monero":
             price = subprocess.check_output(