diff --git a/plugins/yahoo_stock_ticker.18m.py b/plugins/yahoo_stock_ticker.18m.py
index 1e621c8..391975f 100755
--- a/plugins/yahoo_stock_ticker.18m.py
+++ b/plugins/yahoo_stock_ticker.18m.py
@@ -130,7 +130,7 @@ def read_data_file(data_file):
     return content
 
 
-def write_data_file(data_file, imit_type, symbol, price):
+def write_data_file(data_file, limit_type, symbol, price):
     with open(data_file, 'a') as f:
         f.write(limit_type + ' ' + symbol + ' ' + price + '\n')
     f.close()