1 files changed, 1 insertions, 1 deletions
diff --git a/src/gui/text/qcssparser_p.h b/src/gui/text/qcssparser_p.h
index 0dc4438d04..826e0b309d 100644
--- a/src/gui/text/qcssparser_p.h
+++ b/src/gui/text/qcssparser_p.h
@@ -752,7 +752,7 @@ class Q_GUI_EXPORT Parser
 {
 public:
     Parser();
-    Parser(const QString &css, bool file = false);
+    explicit Parser(const QString &css, bool file = false);
 
     void init(const QString &css, bool file = false);
     bool parse(StyleSheet *styleSheet, Qt::CaseSensitivity nameCaseSensitivity = Qt::CaseSensitive);