diff --git a/tests/sm3test.c b/tests/sm3test.c
index b58b0174..84623aa2 100644
--- a/tests/sm3test.c
+++ b/tests/sm3test.c
@@ -185,6 +185,9 @@ static int test_sm3_speed(void)
 	double seconds;
 	int i;
 
+	for (i = 0; i < 4096; i++) {
+		sm3_update(&sm3_ctx, blocks, sizeof(blocks));
+	}
 	start = clock();
 	sm3_init(&sm3_ctx);
 	for (i = 0; i < 4096; i++) {
@@ -195,7 +198,7 @@ static int test_sm3_speed(void)
 
 	seconds = (double)(end - start)/CLOCKS_PER_SEC;
 
-	fprintf(stderr, "sm3 on 16-MiB : time %f seconds : %f MiB per second\n", seconds, 16/seconds);
+	fprintf(stderr, "%s: %f MiB per second\n", __FUNCTION__, 16/seconds);
 
 	return 1;