diff --git a/tests/unit/unit1660.c b/tests/unit/unit1660.c
index b42a0bae7a..23a4b8bf1a 100644
--- a/tests/unit/unit1660.c
+++ b/tests/unit/unit1660.c
@@ -132,7 +132,7 @@ static CURLcode test_unit1660(const char *arg)
         continue;
       }
       else if(result) {
-        curl_mprintf("Input %u: error %d\n", i, (int)result);
+        curl_mprintf("Input %u: error %d\n", i, result);
         continue;
       }
     }