[Bug #936837] Add missing word
diff --git a/Doc/api/abstract.tex b/Doc/api/abstract.tex
index 152f1a4..372e2a5 100644
--- a/Doc/api/abstract.tex
+++ b/Doc/api/abstract.tex
@@ -573,7 +573,7 @@
\begin{cfuncdesc}{PyObject*}{PyNumber_InPlaceFloorDivide}{PyObject *o1,
PyObject *o2}
- Returns the mathematical of dividing \var{o1} by \var{o2}, or
+ Returns the mathematical floor of dividing \var{o1} by \var{o2}, or
\NULL{} on failure. The operation is done \emph{in-place} when
\var{o1} supports it. This is the equivalent of the Python
statement \samp{\var{o1} //= \var{o2}}.