diff --git a/src/pack-objects.h b/src/pack-objects.h
index 8c01f7189..e34cc2754 100644
--- a/src/pack-objects.h
+++ b/src/pack-objects.h
@@ -71,11 +71,11 @@ struct git_packbuilder {
 	git_cond progress_cond;
 
 	/* configs */
-	unsigned long delta_cache_size;
-	unsigned long max_delta_cache_size;
-	unsigned long cache_max_small_delta_size;
-	unsigned long big_file_threshold;
-	unsigned long window_memory_limit;
+	uint64_t delta_cache_size;
+	uint64_t max_delta_cache_size;
+	uint64_t cache_max_small_delta_size;
+	uint64_t big_file_threshold;
+	uint64_t window_memory_limit;
 
 	int nr_threads; /* nr of threads to use */
 
diff --git a/tests-clar/object/raw/short.c b/tests-clar/object/raw/short.c
index 14b1ae219..93c79b6a5 100644
--- a/tests-clar/object/raw/short.c
+++ b/tests-clar/object/raw/short.c
@@ -43,7 +43,7 @@ void test_object_raw_short__oid_shortener_stresstest_git_oid_shorten(void)
 	for (i = 0; i < MAX_OIDS; ++i) {
 		char *oid_text;
 
-		sprintf(number_buffer, "%u", (unsigned int)i);
+		p_snprintf(number_buffer, 16, "%u", (unsigned int)i);
 		git_hash_buf(&oid, number_buffer, strlen(number_buffer));
 
 		oid_text = git__malloc(GIT_OID_HEXSZ + 1);