diff --git a/include/sysemu/os-win32.h b/include/sysemu/os-win32.h
index 3c74a78..edc3b38 100644
--- a/include/sysemu/os-win32.h
+++ b/include/sysemu/os-win32.h
@@ -109,20 +109,22 @@
     return resolved_path;
 }
 
-/* ??? Mingw appears to export _lock_file and _unlock_file as the functions
- * with which to lock a stdio handle.  But something is wrong in the markup,
- * either in the header or the library, such that we get undefined references
- * to "_imp___lock_file" etc when linking.  Since we seem to have no other
- * alternative, and the usage within the logging functions isn't critical,
- * ignore FILE locking.
+/*
+ * Older versions of MinGW do not import _lock_file and _unlock_file properly.
+ * This was fixed for v6.0.0 with commit b48e3ac8969d.
  */
-
 static inline void qemu_flockfile(FILE *f)
 {
+#ifdef HAVE__LOCK_FILE
+    _lock_file(f);
+#endif
 }
 
 static inline void qemu_funlockfile(FILE *f)
 {
+#ifdef HAVE__LOCK_FILE
+    _unlock_file(f);
+#endif
 }
 
 /* We wrap all the sockets functions so that we can
diff --git a/meson.build b/meson.build
index 6ba6095..d083c6b 100644
--- a/meson.build
+++ b/meson.build
@@ -2030,6 +2030,18 @@
   endif
 endforeach
 
+# Older versions of MinGW do not import _lock_file and _unlock_file properly.
+# This was fixed for v6.0.0 with commit b48e3ac8969d.
+if targetos == 'windows'
+  config_host_data.set('HAVE__LOCK_FILE', cc.links('''
+    #include <stdio.h>
+    int main(void) {
+      _lock_file(NULL);
+      _unlock_file(NULL);
+      return 0;
+    }''', name: '_lock_file and _unlock_file'))
+endif
+
 ########################
 # Target configuration #
 ########################