diff --git a/src/plugins/qmlprofiler/qmlevent.h b/src/plugins/qmlprofiler/qmlevent.h
index 1f2fe202078..782df2a0f17 100644
--- a/src/plugins/qmlprofiler/qmlevent.h
+++ b/src/plugins/qmlprofiler/qmlevent.h
@@ -159,9 +159,9 @@ struct QmlEvent {
     {
         switch (m_dataType) {
         case External8Bit:
-            return QString::fromUtf8(static_cast<const char *>(m_data.external));
+            return QString::fromUtf8(static_cast<const char *>(m_data.external), m_dataLength);
         case Inline8Bit:
-            return QString::fromUtf8(m_data.internalChar);
+            return QString::fromUtf8(m_data.internalChar, m_dataLength);
         default:
             Q_UNREACHABLE();
             return QString();