diff --git a/rasterio/transform.py b/rasterio/transform.py
index 083e1e37..c24670bd 100644
--- a/rasterio/transform.py
+++ b/rasterio/transform.py
@@ -151,9 +151,9 @@ def rowcol(transform, xs, ys, op=math.floor, precision=6):
     Returns
     -------
     rows : list of ints
-        list of row indicies
+        list of row indices
     cols : list of ints
-        list of column indicies
+        list of column indices
     """
 
     single_x = False