6 files changed, 6 insertions, 6 deletions
diff --git a/src/gui/models/worldlistmodel.h b/src/gui/models/worldlistmodel.h
index 4436f848c..f22c808bb 100644
--- a/src/gui/models/worldlistmodel.h
+++ b/src/gui/models/worldlistmodel.h
@@ -35,7 +35,7 @@
 class WorldListModel final : public ListModel
 {
     public:
-        explicit WorldListModel(Worlds worlds) :
+        explicit WorldListModel(const Worlds &worlds) :
             mWorlds(worlds)
         {
         }
diff --git a/src/gui/widgets/tabs/shortcuttab.h b/src/gui/widgets/tabs/shortcuttab.h
index 7c4419442..61652777f 100644
--- a/src/gui/widgets/tabs/shortcuttab.h
+++ b/src/gui/widgets/tabs/shortcuttab.h
@@ -31,7 +31,7 @@ class ShortcutTab final : public Tab
 {
     public:
         ShortcutTab(const Widget2 *const widget,
-                    std::string name,
+                    const std::string &name,
                     ShortcutContainer *const content) :
             Tab(widget),
             mContent(content)
diff --git a/src/gui/widgets/tabs/socialfriendstab.h b/src/gui/widgets/tabs/socialfriendstab.h
index 9c9525cd3..5bd13220b 100644
--- a/src/gui/widgets/tabs/socialfriendstab.h
+++ b/src/gui/widgets/tabs/socialfriendstab.h
@@ -42,7 +42,7 @@ class SocialFriendsTab final : public SocialTab
 {
     public:
         SocialFriendsTab(const Widget2 *const widget,
-                         std::string name,
+                         const std::string &name,
                          const Opaque showBackground) :
             SocialTab(widget),
             mBeings(new BeingsListModel),
diff --git a/src/gui/widgets/tabs/socialplayerstab.h b/src/gui/widgets/tabs/socialplayerstab.h
index f4c3f2bbe..87b0335c1 100644
--- a/src/gui/widgets/tabs/socialplayerstab.h
+++ b/src/gui/widgets/tabs/socialplayerstab.h
@@ -43,7 +43,7 @@ class SocialPlayersTab final : public SocialTab
 {
     public:
         SocialPlayersTab(const Widget2 *const widget,
-                         std::string name,
+                         const std::string &name,
                          const Opaque showBackground) :
             SocialTab(widget),
             mBeings(new BeingsListModel)
diff --git a/src/gui/windows/worldselectdialog.cpp b/src/gui/windows/worldselectdialog.cpp
index a80c56085..919440a40 100644
--- a/src/gui/windows/worldselectdialog.cpp
+++ b/src/gui/windows/worldselectdialog.cpp
@@ -42,7 +42,7 @@
 
 extern WorldInfo **server_info;
 
-WorldSelectDialog::WorldSelectDialog(Worlds worlds) :
+WorldSelectDialog::WorldSelectDialog(const Worlds &worlds) :
     // TRANSLATORS: world select dialog name
     Window(_("Select World"), Modal_false, nullptr, "world.xml"),
     ActionListener(),
diff --git a/src/gui/windows/worldselectdialog.h b/src/gui/windows/worldselectdialog.h
index 6d31d2a53..4c6dc0f8c 100644
--- a/src/gui/windows/worldselectdialog.h
+++ b/src/gui/windows/worldselectdialog.h
@@ -49,7 +49,7 @@ class WorldSelectDialog final : public Window,
          *
          * @see Window::Window
          */
-        explicit WorldSelectDialog(Worlds worlds);
+        explicit WorldSelectDialog(const Worlds &worlds);
 
         A_DELETE_COPY(WorldSelectDialog)