diff --git a/kdeplasma-addons/applets/qalculate/qalculate_labels.h b/kdeplasma-addons/applets/qalculate/qalculate_labels.h
index 6b954e2b..c305cf45 100644
--- a/kdeplasma-addons/applets/qalculate/qalculate_labels.h
+++ b/kdeplasma-addons/applets/qalculate/qalculate_labels.h
@@ -40,7 +40,7 @@ public:
 
 private:
     const QalculateSettings *m_qalculateSettings;
-    vector<MathStructure> result_parts;
+    std::vector<MathStructure> result_parts;
     bool in_matrix;
 };