diff --git a/src/gui/text/qstatictext.h b/src/gui/text/qstatictext.h
index 00dfccc144..e6a196d865 100644
--- a/src/gui/text/qstatictext.h
+++ b/src/gui/text/qstatictext.h
@@ -62,7 +62,7 @@ public:
     };
 
     QStaticText();
-    QStaticText(const QString &text);
+    explicit QStaticText(const QString &text);
     QStaticText(const QStaticText &other);
 #ifdef Q_COMPILER_RVALUE_REFS
     QStaticText &operator=(QStaticText &&other) Q_DECL_NOTHROW { swap(other); return *this; }