--- ncurses/base/lib_freeall.c
+++ ncurses/base/lib_freeall.c
@@ -51,6 +51,7 @@
 {
     WINDOWLIST *p, *q;
     char *s;
+    va_list empty_va;
 
     T((T_CALLED("_nc_freeall()")));
 #if NO_LEAKS
@@ -99,7 +100,7 @@
     if ((s = _nc_home_terminfo()) != 0)
 	free(s);
 
-    (void) _nc_printf_string(0, 0);
+    (void) _nc_printf_string(0, empty_va);
 #ifdef TRACE
     (void) _nc_trace_buf(-1, 0);
 #endif