diff --git a/as/src/base/batch.c b/as/src/base/batch.c
index 30ee956c..1977e2a2 100644
--- a/as/src/base/batch.c
+++ b/as/src/base/batch.c
@@ -812,6 +812,10 @@ as_batch_init()
 	// Default 'batch-index-threads' can't be set before call to cf_topo_init().
 	if (g_config.n_batch_index_threads == 0) {
 		g_config.n_batch_index_threads = cf_topo_count_cpus();
+
+		if (g_config.n_batch_index_threads > MAX_BATCH_THREADS) {
+			g_config.n_batch_index_threads = MAX_BATCH_THREADS;
+		}
 	}
 
 	cf_info(AS_BATCH, "starting %u batch-index-threads", g_config.n_batch_index_threads);
diff --git a/as/src/base/cfg.c b/as/src/base/cfg.c
index 2abfbf31..481c52dc 100644
--- a/as/src/base/cfg.c
+++ b/as/src/base/cfg.c
@@ -4029,6 +4029,10 @@ as_config_post_process(as_config* c, const char* config_file)
 	if (c->n_service_threads == 0) {
 		c->n_service_threads = c->n_namespaces_not_inlined != 0 ?
 				n_cpus * 5 : n_cpus;
+
+		if (c->n_service_threads > MAX_SERVICE_THREADS) {
+			c->n_service_threads = MAX_SERVICE_THREADS;
+		}
 	}
 
 	// Setup performance metrics histograms.