diff --git a/tests-extra/tests/basic/query/test.py b/tests-extra/tests/basic/query/test.py
index 07030cfe9..fc508e50a 100644
--- a/tests-extra/tests/basic/query/test.py
+++ b/tests-extra/tests/basic/query/test.py
@@ -20,28 +20,39 @@ t.start()
 
 # Negative (REFUSED)
 resp = knot.dig("another.world", "SOA", udp=True)
+resp.check(rcode="REFUSED")
 resp.cmp(bind)
 
 # Negative (NXDOMAIN)
 resp = knot.dig("nxdomain.flags", "A", udp=True)
+resp.check(rcode="NXDOMAIN")
 resp.cmp(bind)
 
 ''' Positive answers. '''
 
+# Positive (DATA)
+resp = knot.dig("DNs1.fLAgs", "A", udp=True)
+resp.check(rcode="NOERROR")
+resp.cmp(bind)
+
 # Positive (DATA)
 resp = knot.dig("dns1.flags", "A", udp=True)
+resp.check(rcode="NOERROR")
 resp.cmp(bind)
 
 # Positive (NODATA)
 resp = knot.dig("dns1.flags", "TXT", udp=True)
+resp.check(rcode="NOERROR")
 resp.cmp(bind)
 
 # Positive (REFERRAL)
 resp = knot.dig("sub.flags", "NS", udp=True)
+resp.check(rcode="NOERROR")
 resp.cmp(bind)
 
 # Positive (REFERRAL, below delegation)
 resp = knot.dig("ns.sub.flags", "A", udp=True)
+resp.check(rcode="NOERROR")
 resp.cmp(bind)
 
 ''' ANY query type. '''