diff --git a/src/plugins/qmlprofiler/qmlprofilermodelmanager.cpp b/src/plugins/qmlprofiler/qmlprofilermodelmanager.cpp
index 2d02c10afd7..faf6490388b 100644
--- a/src/plugins/qmlprofiler/qmlprofilermodelmanager.cpp
+++ b/src/plugins/qmlprofiler/qmlprofilermodelmanager.cpp
@@ -480,14 +480,16 @@ int QmlProfilerEventTypeStorage::append(Timeline::TraceEventType &&type)
         QTC_CHECK(false);
         m_types.push_back(QmlEventType());
     }
-    QTC_ASSERT(index <= std::numeric_limits<int>::max(), return std::numeric_limits<int>::max());
+    QTC_ASSERT(index <= static_cast<size_t>(std::numeric_limits<int>::max()),
+               return std::numeric_limits<int>::max());
     return static_cast<int>(index);
 }
 
 int QmlProfilerEventTypeStorage::size() const
 {
     const size_t size = m_types.size();
-    QTC_ASSERT(size <= std::numeric_limits<int>::max(), return std::numeric_limits<int>::max());
+    QTC_ASSERT(size <= static_cast<size_t>(std::numeric_limits<int>::max()),
+               return std::numeric_limits<int>::max());
     return static_cast<int>(size);
 }
 
diff --git a/src/plugins/qmlprofiler/qmlprofilerstatisticsmodel.h b/src/plugins/qmlprofiler/qmlprofilerstatisticsmodel.h
index 6691dcbf923..f9e4d1ba797 100644
--- a/src/plugins/qmlprofiler/qmlprofilerstatisticsmodel.h
+++ b/src/plugins/qmlprofiler/qmlprofilerstatisticsmodel.h
@@ -97,7 +97,7 @@ public:
         {
             static const qint64 qint64Max = std::numeric_limits<qint64>::max();
             size_t size = durations.size();
-            QTC_ASSERT(size <= qint64Max, size = qint64Max);
+            QTC_ASSERT(sizeof(size_t) < sizeof(qint64) || size <= qint64Max, size = qint64Max);
             calls = static_cast<qint64>(size);
 
             if (size == 0)