diff --git a/diff-delta.c b/diff-delta.c
index 93385e1..3797ce6 100644
--- a/diff-delta.c
+++ b/diff-delta.c
@@ -155,7 +155,7 @@
 		entries = 0xfffffffeU / RABIN_WINDOW;
 	}
 	hsize = entries / 4;
-	for (i = 4; (1u << i) < hsize && i < 31; i++);
+	for (i = 4; (1u << i) < hsize; i++);
 	hsize = 1 << i;
 	hmask = hsize - 1;