diff --git a/docs/latex/wx/wxstring.tex b/docs/latex/wx/wxstring.tex
index 7ad9ea73ad..7f68813c74 100644
--- a/docs/latex/wx/wxstring.tex
+++ b/docs/latex/wx/wxstring.tex
@@ -644,7 +644,7 @@ to put the string back into a reasonable state.
 
 \membersection{wxString::Index}\label{wxstringindex}
 
-\constfunc{size\_t}{Index}{\param{char}{ ch}, \param{int}{ startpos = 0}}
+\constfunc{size\_t}{Index}{\param{char}{ ch}}
 
 Same as \helpref{wxString::Find}{wxstringfind}.