diff --git a/docs/cmu-user/cmu-user.tex b/docs/cmu-user/cmu-user.tex
index 7ee0a53c78540977b70ed5364ad6a214e0ae798c..bd8eb626357e0d99d3a2741d460b0773ea99556d 100644
--- a/docs/cmu-user/cmu-user.tex
+++ b/docs/cmu-user/cmu-user.tex
@@ -11605,7 +11605,7 @@ when the C function was entered, there is no telling what will happen.
   The type of \var{alien-function} must be \code{(alien (function
     ...))} or \code{(alien (* (function ...)))},
   \xlref{alien-function-types}.  The function type is used to
-  determine how to call the function (as through it was declared with
+  determine how to call the function (as though it was declared with
   a prototype.)  The type need not be known at compile time, but only
   known-type calls are efficiently compiled.  Limitations:
   \begin{itemize}