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-rw-r--r--src/gui/setup_relations.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/gui/setup_relations.h b/src/gui/setup_relations.h
index 92ebf9ec1..3ed9e7189 100644
--- a/src/gui/setup_relations.h
+++ b/src/gui/setup_relations.h
@@ -47,7 +47,7 @@ class Setup_Relations final : public SetupTab,
public PlayerRelationsListener
{
public:
- Setup_Relations(const Widget2 *const widget);
+ explicit Setup_Relations(const Widget2 *const widget);
A_DELETE_COPY(Setup_Relations)