diff --git a/piker/brokers/kucoin.py b/piker/brokers/kucoin.py
index e66384d6..8e9d398c 100644
--- a/piker/brokers/kucoin.py
+++ b/piker/brokers/kucoin.py
@@ -316,7 +316,8 @@ class Client:
         type: str = '1min',
     ) -> np.ndarray:
         '''
-        Get OHLC data and convert to numpy array for perffff
+        Get OHLC data and convert to numpy array for perffff:
+        https://docs.kucoin.com/#get-klines
 
         '''
         # Generate generic end and start time if values not passed