diff --git a/include/qemu-common.h b/include/qemu-common.h
index 1fbc20e4bc..a271cac66a 100644
--- a/include/qemu-common.h
+++ b/include/qemu-common.h
@@ -24,10 +24,6 @@
 int qemu_main(int argc, char **argv, char **envp);
 #endif
 
-/* OS specific functions */
-void os_setup_early_signal_handling(void);
-int os_parse_cmd_args(int index, const char *optarg);
-
 void page_size_init(void);
 
 #endif
diff --git a/include/sysemu/os-posix.h b/include/sysemu/os-posix.h
index 23bd45457d..58de7c994d 100644
--- a/include/sysemu/os-posix.h
+++ b/include/sysemu/os-posix.h
@@ -42,7 +42,9 @@
 extern "C" {
 #endif
 
+int os_parse_cmd_args(int index, const char *optarg);
 void os_set_line_buffering(void);
+void os_setup_early_signal_handling(void);
 void os_set_proc_name(const char *s);
 void os_setup_signal_handling(void);
 void os_daemonize(void);
diff --git a/include/sysemu/os-win32.h b/include/sysemu/os-win32.h
index 1351d1d29e..3c74a78e33 100644
--- a/include/sysemu/os-win32.h
+++ b/include/sysemu/os-win32.h
@@ -62,8 +62,10 @@ struct tm *localtime_r(const time_t *timep, struct tm *result);
 static inline void os_setup_signal_handling(void) {}
 static inline void os_daemonize(void) {}
 static inline void os_setup_post(void) {}
-void os_set_line_buffering(void);
 static inline void os_set_proc_name(const char *dummy) {}
+static inline int os_parse_cmd_args(int index, const char *optarg) { return -1; }
+void os_set_line_buffering(void);
+void os_setup_early_signal_handling(void);
 
 int getpagesize(void);
 
diff --git a/os-win32.c b/os-win32.c
index e31c921983..6f21b57841 100644
--- a/os-win32.c
+++ b/os-win32.c
@@ -61,12 +61,3 @@ void os_set_line_buffering(void)
     setbuf(stdout, NULL);
     setbuf(stderr, NULL);
 }
-
-/*
- * Parse OS specific command line options.
- * return 0 if option handled, -1 otherwise
- */
-int os_parse_cmd_args(int index, const char *optarg)
-{
-    return -1;
-}