diff --git a/gbasis/contractions.py b/gbasis/contractions.py
index 3c1183e7..06c26c13 100644
--- a/gbasis/contractions.py
+++ b/gbasis/contractions.py
@@ -141,7 +141,7 @@ def __init__(
             "spherical" or "p".
         icenter : np.int64 or None (optional)
             Index for the atomic center for the contraction
-        ovr_tol : float
+        tol : float
             Tolerance used in overlap screening.
         ovr_screen : boolean
             Flag used for activating overlap screening.
diff --git a/gbasis/wrappers.py b/gbasis/wrappers.py
index 22c26d02..968ad364 100644
--- a/gbasis/wrappers.py
+++ b/gbasis/wrappers.py
@@ -12,7 +12,7 @@ def from_iodata(mol, tol=1e-20, overlap=False):
         `IOData` instance from `iodata` module.
     tol : float
         Tolerance used in overlap screening.
-    ovrlap : bool
+    overlap : bool
         Flag for performing overlap screening between contractions.
 
     Returns