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-rw-r--r--src/gui/widgets/button.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/gui/widgets/button.h b/src/gui/widgets/button.h
index d0431217e..90faa7d06 100644
--- a/src/gui/widgets/button.h
+++ b/src/gui/widgets/button.h
@@ -52,7 +52,7 @@ class Button final : public gcn::Button,
/**
* Default constructor.
*/
- Button(const Widget2 *const widget);
+ explicit Button(const Widget2 *const widget);
/**
* Constructor, sets the caption of the button to the given string and