diff --git a/Doc/api/abstract.tex b/Doc/api/abstract.tex
index 977a17a32d5..c5aee66750a 100644
--- a/Doc/api/abstract.tex
+++ b/Doc/api/abstract.tex
@@ -831,7 +831,7 @@ determination.
 \end{cfuncdesc}
 
 \begin{cfuncdesc}{PyObject*}{PySequence_ITEM}{PyObject *o, int i}
-  Return the \var{i}th element of \var{o} or \NULL on failure.
+  Return the \var{i}th element of \var{o} or \NULL{} on failure.
   Macro form of \cfunction{PySequence_GetItem()} but without checking
   that \cfunction{PySequence_Check(\var{o})} is true and without
   adjustment for negative indices.