diff --git a/pytplot/tplot_math/deflag.py b/pytplot/tplot_math/deflag.py
index 202a0a5..8e61532 100644
--- a/pytplot/tplot_math/deflag.py
+++ b/pytplot/tplot_math/deflag.py
@@ -6,8 +6,7 @@
 
 def deflag(tvar, flag=None, newname=None, new_tvar=None, method=None, fillval=None):
     """
-    Replaces FLAGs in arrays with interpolated or other values.
-    Optionally removes NaN values from a variable
+    Replace NaN or other 'flag' values in arrays with interpolated or other values.
 
     Parameters
     ----------
diff --git a/pytplot/tplot_math/tdotp.py b/pytplot/tplot_math/tdotp.py
index 07f4d92..100da8c 100644
--- a/pytplot/tplot_math/tdotp.py
+++ b/pytplot/tplot_math/tdotp.py
@@ -4,9 +4,7 @@
 
 def tdotp(variable1, variable2, newname=None):
     """
-    Routine to calculate the dot product of two tplot variables
-    containing arrays of vectors and storing the results in a
-    tplot variable
+    Calculate the sample-by-sample dot product of two tplot variables
 
     Parameters
     -----------