diff --git a/Doc/api/concrete.tex b/Doc/api/concrete.tex
index 43180cc..e602528 100644
--- a/Doc/api/concrete.tex
+++ b/Doc/api/concrete.tex
@@ -2462,7 +2462,7 @@
   object; an existing reference object may be returned.  The second
   parameter, \var{callback}, can be a callable object that receives
   notification when \var{ob} is garbage collected; it should accept a
-  single paramter, which will be the weak reference object itself.
+  single parameter, which will be the weak reference object itself.
   \var{callback} may also be \code{None} or \NULL.  If \var{ob}
   is not a weakly-referencable object, or if \var{callback} is not
   callable, \code{None}, or \NULL, this will return \NULL{} and
@@ -2477,7 +2477,7 @@
   a new object; an existing proxy object may be returned.  The second
   parameter, \var{callback}, can be a callable object that receives
   notification when \var{ob} is garbage collected; it should accept a
-  single paramter, which will be the weak reference object itself.
+  single parameter, which will be the weak reference object itself.
   \var{callback} may also be \code{None} or \NULL.  If \var{ob} is not
   a weakly-referencable object, or if \var{callback} is not callable,
   \code{None}, or \NULL, this will return \NULL{} and raise
diff --git a/Doc/doc/doc.tex b/Doc/doc/doc.tex
index dddb9a9..e7aa0b2 100644
--- a/Doc/doc/doc.tex
+++ b/Doc/doc/doc.tex
@@ -322,7 +322,7 @@
 \end{verbatim}
 
     A macro which takes an optional parameter would be typed like this
-    when the optional paramter is given:
+    when the optional parameter is given:
 
 \begin{verbatim}
 \name[optional]