diff --git a/qemu/include/qemu-common.h b/qemu/include/qemu-common.h
index 155f4e19..4bb13fbd 100644
--- a/qemu/include/qemu-common.h
+++ b/qemu/include/qemu-common.h
@@ -77,17 +77,6 @@
 # error Unknown pointer size
 #endif
 
-#ifdef _WIN32
-#define fsync _commit
-#if !defined(lseek)
-# define lseek _lseeki64
-#endif
-int qemu_ftruncate64(int, int64_t);
-#if !defined(ftruncate)
-# define ftruncate qemu_ftruncate64
-#endif
-#endif
-
 #include "qemu/osdep.h"
 #include "qemu/bswap.h"
 
diff --git a/qemu/include/sysemu/os-win32.h b/qemu/include/sysemu/os-win32.h
index 5d7b1d83..67058d7e 100644
--- a/qemu/include/sysemu/os-win32.h
+++ b/qemu/include/sysemu/os-win32.h
@@ -79,4 +79,15 @@ size_t getpagesize(void);
 # define EPROTONOSUPPORT EINVAL
 #endif
 
+#ifdef _WIN32
+#define fsync _commit
+#if !defined(lseek)
+# define lseek _lseeki64
+#endif
+int qemu_ftruncate64(int, int64_t);
+#if !defined(ftruncate)
+# define ftruncate qemu_ftruncate64
+#endif
+#endif
+
 #endif