diff --git a/hw/xfree86/ddc/edid.h b/hw/xfree86/ddc/edid.h
index 5a41175ddb..5a5efa8664 100644
--- a/hw/xfree86/ddc/edid.h
+++ b/hw/xfree86/ddc/edid.h
@@ -330,7 +330,6 @@
 #define CVT_SUPPORTED(x) (x & 0x1)
 
 /* detailed timing misc */
-#define IS_INTERLACED(x)  (x)
 #define IS_STEREO(x)  (x)
 #define IS_RIGHT_STEREO(x) (x & 0x01)
 #define IS_LEFT_STEREO(x) (x & 0x02)