diff --git a/test/sieve.go b/test/sieve.go
index 03538d62a3..1a96e601dd 100644
--- a/test/sieve.go
+++ b/test/sieve.go
@@ -30,7 +30,7 @@ func Sieve() {
   go Generate(ch);  // Start Generate() as a subprocess.
   for {
     prime := <ch;
-    printf("%d\n",  prime);
+    print "%d\n",  prime;
     ch1 := new(chan int);
     go Filter(ch, ch1, prime);
     ch = ch1