@@ -69,9 +69,9 @@ func TestUserChain(t *testing.T) {

 			if tc.insert {

 				_, err = iptable4.Raw("-A", fwdChainName, "-j", "DROP")

-				assert.NilError(t, err)

+				assert.Check(t, err)

 				_, err = iptable6.Raw("-A", fwdChainName, "-j", "DROP")

-				assert.NilError(t, err)

+				assert.Check(t, err)

 			}

 			arrangeUserFilterRule()

@@ -81,10 +81,10 @@ func TestUserChain(t *testing.T) {

 				assert.Check(t, is.DeepEqual(getRules(t, iptable4, usrChainName), tc.userChain))

 				assert.Check(t, is.DeepEqual(getRules(t, iptable6, usrChainName), tc.userChain))

 			} else {

-				_, err := iptable4.Raw("-S", usrChainName)

-				assert.Assert(t, err != nil, "ipv4 chain %v: created unexpectedly", usrChainName)

+				_, err = iptable4.Raw("-S", usrChainName)

+				assert.Check(t, is.ErrorContains(err, "No chain/target/match by that name"), "ipv4 chain %v: created unexpectedly", usrChainName)

 				_, err = iptable6.Raw("-S", usrChainName)

-				assert.Assert(t, err != nil, "ipv6 chain %v: created unexpectedly", usrChainName)

+				assert.Check(t, is.ErrorContains(err, "No chain/target/match by that name"), "ipv6 chain %v: created unexpectedly", usrChainName)

 			}

 		})

 	}