diff --git a/tests/QBind/QCbor_impl.h b/tests/QBind/QCbor_impl.h
index e6ed22e326a5e3c93105179cf81af8c5867df133..f1500974765d4a7dd450e01476e090156a0faec1 100644
--- a/tests/QBind/QCbor_impl.h
+++ b/tests/QBind/QCbor_impl.h
@@ -198,7 +198,7 @@ protected:
     bool tryBind    (         bool&& b) { set(QCborValue(       b )); return true; }
     bool tryBind    (        float&& d) { set(QCborValue(double(d))); return true; }
     bool tryBind    (       double&& d) { set(QCborValue(       d )); return true; }
-    bool tryBind    (      quint64&& n) { if (std::numeric_limits<qint64>::max()<n) { _reportError(qBindExpectedSmallerNumber); return false; }
+    bool tryBind    (      quint64&& n) { if (quint64(std::numeric_limits<qint64>::max())<n) { _reportError(qBindExpectedSmallerNumber); return false; }
                                           set(QCborValue(qint64(n))); return true; }
     bool tryBind    (       qint64&& n) { set(QCborValue(       n )); return true; }
     bool tryBind    (   QByteArray&& s) { set(QCborValue(       s )); return true; }
diff --git a/tests/QBind/QModel_impl.h b/tests/QBind/QModel_impl.h
index a369558927cd6132eb87a142299b19ccf596f5aa..2e0bb8699842f8803ca8dd02a902b6231b5d28c9 100644
--- a/tests/QBind/QModel_impl.h
+++ b/tests/QBind/QModel_impl.h
@@ -236,6 +236,7 @@ protected:
             if (I==(d+1)) {
                 return tryBind(QString::fromUtf8(ba.data(), ba.size()));
             }
+            return true;
         }
         else {
             if (T==d && parent.isValid()) { // case of a tree, even if hidden()
@@ -556,6 +557,7 @@ protected:
                 }
                 return true;
             }
+            else { return true; }
         }
         else if (is(R)) {
             row++; // mandatory after tryRecord()
@@ -567,6 +569,7 @@ protected:
                 _reportError(qBindIgnoredItemName);
                 return true;
             }
+            else { return true; }
         }
         else { Q_ASSERT(I<=d);
             if (hidden()) {
diff --git a/tests/QBind/main.cpp b/tests/QBind/main.cpp
index eda249d6acb20e11732ba3e1301d127e65768cc6..2946c883e26a50ba70f99990824e454a49f00155 100644
--- a/tests/QBind/main.cpp
+++ b/tests/QBind/main.cpp
@@ -176,6 +176,7 @@ struct PersonsTable {
             ids.clear();
             return flatten(persons, v.sequence());
         }
+        else { Q_ASSERT_X(!v, Q_FUNC_INFO, "Unsupported v->mode()"); return v.null(); }
     }
 private:
     QStack<int> parentIds;
@@ -234,6 +235,7 @@ private:
 
             return std::move(s);
         }
+        else { Q_ASSERT_X(!s, Q_FUNC_INFO, "Unsupported v->mode()"); return std::move(s); }
     }
 
     QSequence flatten(QList<Person>& ps, QSequence&& s) {