diff --git a/lib/dns/qp.c b/lib/dns/qp.c
index 07080f5bd2..7156efc4fe 100644
--- a/lib/dns/qp.c
+++ b/lib/dns/qp.c
@@ -49,7 +49,7 @@
 #include "qp_p.h"
 
 #ifndef DNS_QP_LOG_STATS
-#define DNS_QP_LOG_STATS 1
+#define DNS_QP_LOG_STATS 0
 #endif
 #ifndef DNS_QP_TRACE
 #define DNS_QP_TRACE 0
@@ -1304,7 +1304,10 @@ dns_qpmulti_commit(dns_qpmulti_t *multi, dns_qp_t **qptp) {
  */
 void
 dns_qpmulti_rollback(dns_qpmulti_t *multi, dns_qp_t **qptp) {
-	unsigned int nfree = 0;
+	/*
+	 * nfree is only used when logging stats, hence the attribute.
+	 */
+	unsigned int nfree ISC_ATTR_UNUSED = 0;
 
 	REQUIRE(QPMULTI_VALID(multi));
 	REQUIRE(multi->writer.transaction_mode == QP_UPDATE);
diff --git a/lib/dns/qp_p.h b/lib/dns/qp_p.h
index d61c4a0007..666d6fb9ed 100644
--- a/lib/dns/qp_p.h
+++ b/lib/dns/qp_p.h
@@ -143,14 +143,14 @@ enum {
  * size to make the allocator work harder.
  */
 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
-#define QP_CHUNK_LOG_MIN 6
+#define QP_CHUNK_LOG_MIN 7
 #define QP_CHUNK_LOG_MAX 7
 #else
-#define QP_CHUNK_LOG_MIN 6
-#define QP_CHUNK_LOG_MAX 10
+#define QP_CHUNK_LOG_MIN 3
+#define QP_CHUNK_LOG_MAX 12
 #endif
 
-STATIC_ASSERT(6 <= QP_CHUNK_LOG_MIN && QP_CHUNK_LOG_MIN <= QP_CHUNK_LOG_MAX,
+STATIC_ASSERT(2 <= QP_CHUNK_LOG_MIN && QP_CHUNK_LOG_MIN <= QP_CHUNK_LOG_MAX,
 	      "qp-trie min chunk size is unreasonable");
 STATIC_ASSERT(6 <= QP_CHUNK_LOG_MAX && QP_CHUNK_LOG_MAX <= 20,
 	      "qp-trie max chunk size is unreasonable");