diff --git a/Doc/lib/libexcs.tex b/Doc/lib/libexcs.tex
index 1f39136..0dccafc 100644
--- a/Doc/lib/libexcs.tex
+++ b/Doc/lib/libexcs.tex
@@ -322,7 +322,7 @@
 \end{excdesc}
 
 \begin{excdesc}{TypeError}
-  Raised when a built-in operation or function is applied to an object
+  Raised when an operation or function is applied to an object
   of inappropriate type.  The associated value is a string giving
   details about the type mismatch.
 \end{excdesc}