diff --git a/hw/xfree86/common/xf86Opt.h b/hw/xfree86/common/xf86Opt.h
index d210c7c31..b072b42db 100644
--- a/hw/xfree86/common/xf86Opt.h
+++ b/hw/xfree86/common/xf86Opt.h
@@ -143,9 +143,6 @@ extern _X_EXPORT XF86OptionPtr xf86ReplaceIntOption(XF86OptionPtr optlist,
 extern _X_EXPORT XF86OptionPtr xf86ReplaceBoolOption(XF86OptionPtr optlist,
                                                      const char *name,
                                                      const Bool val);
-extern _X_EXPORT XF86OptionPtr xf86ReplacePercentOption(XF86OptionPtr optlist,
-                                                        const char *name,
-                                                        const double val);
 extern _X_EXPORT XF86OptionPtr xf86ReplaceStrOption(XF86OptionPtr optlist,
                                                     const char *name,
                                                     const char *val);
diff --git a/hw/xfree86/common/xf86Option.c b/hw/xfree86/common/xf86Option.c
index 14748c642..a4f186028 100644
--- a/hw/xfree86/common/xf86Option.c
+++ b/hw/xfree86/common/xf86Option.c
@@ -309,16 +309,6 @@ xf86ReplaceBoolOption(XF86OptionPtr optlist, const char *name, const Bool val)
     return xf86AddNewOption(optlist, name, val ? "True" : "False");
 }
 
-XF86OptionPtr
-xf86ReplacePercentOption(XF86OptionPtr optlist, const char *name,
-                         const double val)
-{
-    char tmp[16];
-
-    snprintf(tmp, sizeof(tmp), "%lf%%", val);
-    return xf86AddNewOption(optlist, name, tmp);
-}
-
 XF86OptionPtr
 xf86ReplaceStrOption(XF86OptionPtr optlist, const char *name, const char *val)
 {