diff --git a/src/cmd/acme/dat.h b/src/cmd/acme/dat.h
index 8a81c97d..e540605a 100644
--- a/src/cmd/acme/dat.h
+++ b/src/cmd/acme/dat.h
@@ -28,7 +28,7 @@ enum
 enum
 {
 	Blockincr =	256,
-	Maxblock = 	8*1024,
+	Maxblock = 	32*1024,
 	NRange =		10,
 	Infinity = 		0x7FFFFFFF	/* huge value for regexp address */
 };