Index: src/include/win/port_win.h |
diff --git a/src/include/win/port_win.h b/src/include/win/port_win.h |
index a63b963cadaaa8d4dba072258a75f214b835be9e..790a8fe3e87ab29b1626cb12e71bb11af84728dc 100644 |
--- a/src/include/win/port_win.h |
+++ b/src/include/win/port_win.h |
@@ -140,7 +140,7 @@ EXTERN_C_BEGIN |
/* arguments processing */ |
int ffs(int x); |
-int getopt(int argc, char *argv[], char *optstring); |
+int getopt(int argc, char *argv[], const char *optstring); |
extern char *optarg; /* global argument pointer */ |
extern int optind; /* global argv index */ |