diff --git a/src/tools/uic/cpp/cppwriteinitialization.cpp b/src/tools/uic/cpp/cppwriteinitialization.cpp
index d69eeebc5c1..2fc6f20782c 100644
--- a/src/tools/uic/cpp/cppwriteinitialization.cpp
+++ b/src/tools/uic/cpp/cppwriteinitialization.cpp
@@ -1151,6 +1151,7 @@ void WriteInitialization::writeProperties(const QString &varName,
         DomPropertyMap properties = propertyMap(lst);
         if (properties.contains(QLatin1String("control"))) {
             DomProperty *p = properties.value(QLatin1String("control"));
+            Q_ASSERT( p );
             m_output << m_indent << varName << "->setControl("
                    << writeString(toString(p->elementString()), m_dindent) << ");\n";
         }