diff --git a/write.c b/write.c
index 37129ef9092fab284a3ddbc155d3f858367fb4c1..50f6afdc1459f18964a6e8aadd0658231cf43766 100644
--- a/write.c
+++ b/write.c
@@ -885,7 +885,7 @@ writecmap(FILE* out, FontPtr font)
     /* How baroque can you get? */
     writeUSHORT(out, segcount * 2); /* segCountX2 */
     writeUSHORT(out, 2 * two_log2_floor(segcount)); /* searchRange */
-    writeUSHORT(out, 1 + log2_floor(segcount));   /* entrySelector */
+    writeUSHORT(out, log2_floor(segcount));   /* entrySelector */
     writeUSHORT(out, 2 * (segcount - two_log2_floor(segcount)));   
                                 /* rangeShift */