diff --git a/lib/hcrypto/test_crypto.in b/lib/hcrypto/test_crypto.in
index 06505bfe8..51b4da442 100644
--- a/lib/hcrypto/test_crypto.in
+++ b/lib/hcrypto/test_crypto.in
@@ -78,7 +78,8 @@ for a in unix fortuna egd w32crypto ;do
 	    echo "random metod $a out for dinner"
 	    continue
 	fi
-	cmp crypto-test crypto-test2 && { echo "rand output same!" ; exit 1; }
+	cmp crypto-test crypto-test2 >/dev/null 2>/dev/null && \
+	    { echo "rand output same!" ; exit 1; }
 done
 
 ./example_evp_cipher 1 ${srcdir}/test_crypto.in test-out-1 || \