diff --git a/pkg/rfc2317/arpa_test.go b/pkg/rfc2317/arpa_test.go
index 3523cce7d..67e18028a 100644
--- a/pkg/rfc2317/arpa_test.go
+++ b/pkg/rfc2317/arpa_test.go
@@ -117,7 +117,7 @@ func TestCidrToInAddr(t *testing.T) {
 				if err == nil {
 					// ...but we didn't get one.
 					t.Errorf("Expected ERROR('%s') but got result '%s'", tst.errmsg, d)
-				} if err.Error() != tst.errmsg {
+				} else if err.Error() != tst.errmsg {
 					// ...but not the right error.
 					t.Errorf("Expected ERROR('%s') but got ERROR('%s')", tst.errmsg, err)
 				}