diff --git a/lib/dns/rbtdb.c b/lib/dns/rbtdb.c
index e99e1d79d8..89b853ec45 100644
--- a/lib/dns/rbtdb.c
+++ b/lib/dns/rbtdb.c
@@ -9640,7 +9640,7 @@ rehash_bits(rbtdb_version_t *version, size_t newcount) {
 	uint32_t newbits = oldbits;
 
 	while (newcount >= HASHSIZE(newbits) &&
-	       newbits <= RBTDB_GLUE_TABLE_MAX_BITS)
+	       newbits < RBTDB_GLUE_TABLE_MAX_BITS)
 	{
 		newbits += 1;
 	}