diff --git a/hw/xfree86/common/xf86Option.c b/hw/xfree86/common/xf86Option.c
index 16c27e5ee..455cafa87 100644
--- a/hw/xfree86/common/xf86Option.c
+++ b/hw/xfree86/common/xf86Option.c
@@ -212,7 +212,7 @@ LookupBoolOption(pointer optlist, const char *name, int deflt, Bool markUsed)
     return deflt;
 }
 
-static int
+static double
 LookupPercentOption(pointer optlist, const char *name, double deflt, Bool markUsed)
 {
     OptionInfoRec o;