diff --git a/documentation/osissues.html b/documentation/osissues.html
index a2b36dc68..afd1ed9b3 100644
--- a/documentation/osissues.html
+++ b/documentation/osissues.html
@@ -371,7 +371,7 @@ should be used as follows:
 #include <X11/xpm.h>
 #include "icon.xpm"
 
-fl_opendisplay();                // needed if display has not been previously opened
+fl_open_display();                // needed if display has not been previously opened
 
 Pixmap p, mask;