--- a/Modules/_cursesmodule.c
+++ b/Modules/_cursesmodule.c
@@ -116,7 +116,6 @@ char *PyCursesVersion = "2.2";
     #defines many common symbols (such as "lines") which breaks the
     curses module in other ways.  So the code will just specify
     explicit prototypes here. */
-extern int setupterm(char *,int,int *);
 #ifdef __sgi
 #include <term.h>
 #endif