diff --git a/hw/xwin/InitOutput.c b/hw/xwin/InitOutput.c
index 65fa17150..17b4c33fd 100644
--- a/hw/xwin/InitOutput.c
+++ b/hw/xwin/InitOutput.c
@@ -91,9 +91,6 @@ void
 void
  winLogVersionInfo(void);
 
-Bool
- winValidateArgs(void);
-
 #ifdef RELOCATE_PROJECTROOT
 const char *winGetBaseDir(void);
 #endif