diff --git a/docs/latex/wx/sizer.tex b/docs/latex/wx/sizer.tex
index 7d721b05fb..3c91bfe3df 100644
--- a/docs/latex/wx/sizer.tex
+++ b/docs/latex/wx/sizer.tex
@@ -212,7 +212,7 @@ The returned value is suitable for passing to
 \helpref{wxWindow::SetClientSize}{wxwindowsetclientsize} or
 \helpref{wxWindow::SetMinClientSize}{wxwindowsetminclientsize}.
 
-\since{2.8.8}
+\newsince{2.8.8}
 
 \wxheading{See also}
 
@@ -231,7 +231,7 @@ The returned value is suitable for passing to
 \helpref{wxWindow::SetSize}{wxwindowsetsize} or
 \helpref{wxWindow::SetMinSize}{wxwindowsetminsize}.
 
-\since{2.8.8}
+\newsince{2.8.8}
 
 \wxheading{See also}
 
diff --git a/docs/latex/wx/window.tex b/docs/latex/wx/window.tex
index 1023537565..cfd6427835 100644
--- a/docs/latex/wx/window.tex
+++ b/docs/latex/wx/window.tex
@@ -356,7 +356,7 @@ Note that the conversion is not always exact, it assumes that non-client area
 doesn't change and so doesn't take into account things like menu bar
 (un)wrapping or (dis)appearance of the scrollbars.
 
-\since{2.8.8}
+\newsince{2.8.8}
 
 \wxheading{See also}
 
@@ -3763,7 +3763,7 @@ Note that the conversion is not always exact, it assumes that non-client area
 doesn't change and so doesn't take into account things like menu bar
 (un)wrapping or (dis)appearance of the scrollbars.
 
-\since{2.8.8}
+\newsince{2.8.8}
 
 \wxheading{See also}