diff --git a/src/cc/rogue/cursesd.c b/src/cc/rogue/cursesd.c
index d1975624c..5bba65c95 100644
--- a/src/cc/rogue/cursesd.c
+++ b/src/cc/rogue/cursesd.c
@@ -282,7 +282,7 @@ int32_t mvcur(int32_t oldrow, int32_t oldcol, int32_t newrow, int32_t newcol)
     return(0);
 }
 
-void endwin()
+void endwin(void)
 {
     if ( stdscr != 0 )
         free(stdscr), stdscr = 0;