diff --git a/pandas_ta/momentum/roc.py b/pandas_ta/momentum/roc.py
index 4b7c2089..df752056 100644
--- a/pandas_ta/momentum/roc.py
+++ b/pandas_ta/momentum/roc.py
@@ -43,7 +43,7 @@ def roc(
 
     Args:
         close (pd.Series): Series of 'close's
-        length (int): It's period. Default: 1
+        length (int): Its period. Default: 10
         scalar (float): How much to magnify. Default: 100
         talib (bool): If TA Lib is installed and talib is True, Returns
             the TA Lib version. Default: True
diff --git a/pandas_ta/performance/percent_return.py b/pandas_ta/performance/percent_return.py
index d5750c70..f0e9a1ea 100644
--- a/pandas_ta/performance/percent_return.py
+++ b/pandas_ta/performance/percent_return.py
@@ -19,7 +19,7 @@ def percent_return(
 
     Args:
         close (pd.Series): Series of 'close's
-        length (int): It's period. Default: 20
+        length (int): Its period. Default: 1
         cumulative (bool): If True, returns the cumulative returns.
             Default: False
         offset (int): How many periods to offset the result. Default: 0