diff --git a/tipbot/commands.py b/tipbot/commands.py
index e2221f1..1a26590 100644
--- a/tipbot/commands.py
+++ b/tipbot/commands.py
@@ -165,7 +165,7 @@ def send(update, context):
         return False
 
     # validate address
-    if len(context.args[0]) in [97, 107, 109]:
+    if len(context.args[0]) in [97, 108]:
         address = context.args[0]
     else:
         update.message.reply_text('This does not look like a valid Wownero address. Try again.')