diff --git a/bench/zrle-bench.c b/bench/zrle-bench.c
index a209a3a..8e845ed 100644
--- a/bench/zrle-bench.c
+++ b/bench/zrle-bench.c
@@ -69,7 +69,11 @@ int run_benchmark(const char *image)
 
 	z_stream zs = { 0 };
 
-	deflateInit(&zs, Z_DEFAULT_COMPRESSION);
+	deflateInit2(&zs, /* compression level: */ 1,
+			  /*            method: */ Z_DEFLATED,
+			  /*       window bits: */ 15,
+			  /*         mem level: */ 9,
+			  /*          strategy: */ Z_DEFAULT_STRATEGY);
 
 	void *dummy = malloc(width * height * 4);
 	if (!dummy)
@@ -92,6 +96,12 @@ int run_benchmark(const char *image)
 	printf("Encoding %s took %"PRIu64" micro seconds\n", image,
 	       end_time - start_time);
 
+	double orig_size = width * height * 4;
+	double compressed_size = frame.len;
+
+	double reduction = (orig_size - compressed_size) / orig_size;
+	printf("Size reduction: %.1f %%\n", reduction * 100.0);
+
 	deflateEnd(&zs);
 
 	if (rc < 0)
diff --git a/src/server.c b/src/server.c
index f2fe829..0142d9a 100644
--- a/src/server.c
+++ b/src/server.c
@@ -748,7 +748,14 @@ static void on_connection(uv_stream_t *server_stream, int status)
 	client->ref = 1;
 	client->server = server;
 
-	if (deflateInit(&client->z_stream, Z_BEST_SPEED) != Z_OK) {
+	int rc = deflateInit2(&client->z_stream,
+			      /* compression level: */ 1,
+			      /*            method: */ Z_DEFLATED,
+			      /*       window bits: */ 15,
+			      /*         mem level: */ 9,
+			      /*          strategy: */ Z_DEFAULT_STRATEGY);
+
+	if (rc != Z_OK) {
 		free(client);
 		return;
 	}