7 files changed, 15 insertions, 13 deletions
diff --git a/src/gui/widgets/selldialog.cpp b/src/gui/widgets/selldialog.cpp
index 956cacb2f..8488e4157 100644
--- a/src/gui/widgets/selldialog.cpp
+++ b/src/gui/widgets/selldialog.cpp
@@ -48,7 +48,7 @@
 SellDialog::DialogList SellDialog::instances;
 
 SellDialog::SellDialog(const IsSell isSell,
-                       const bool advanced) :
+                       const Advanced advanced) :
     // TRANSLATORS: sell dialog name
     Window(_("Sell"), Modal_false, nullptr, "sell.xml"),
     ActionListener(),
@@ -89,7 +89,7 @@ void SellDialog::postInit()
     // Create a ShopItems instance, that is aware of duplicate entries.
     mShopItems = new ShopItems(true);
 
-    if (mAdvanced)
+    if (mAdvanced == Advanced_true)
         mShopItems->setMergeDuplicates(false);
 
     mShopItemList = CREATEWIDGETR(ShopListBox,
@@ -103,7 +103,7 @@ void SellDialog::postInit()
 
     mSellButton = new Button(this,
         // TRANSLATORS: sell dialog button
-        mAdvanced ? _("Add") : _("Sell"),
+        mAdvanced == Advanced_true ? _("Add") : _("Sell"),
         "presell",
         this);
     // TRANSLATORS: sell dialog button
@@ -138,7 +138,7 @@ void SellDialog::postInit()
         // TRANSLATORS: sell dialog label
         mMoneyLabel = new Label(this, strprintf(_("Price: %s / Total: %s"),
             "", ""));
-        if (mAdvanced)
+        if (mAdvanced == Advanced_true)
         {
             // TRANSLATORS: sell dialog button
             mConfirmButton = new Button(this, _("Sell"), "confirm", this);
@@ -160,7 +160,7 @@ void SellDialog::postInit()
         placer(5, 5, mQuantityLabel, 2);
         placer(7, 5, mAddMaxButton);
         placer(0, 6, mMoneyLabel, 8);
-        if (mAdvanced)
+        if (mAdvanced == Advanced_true)
         {
             placer(5, 7, mSellButton);
             placer(6, 7, mConfirmButton);
diff --git a/src/gui/widgets/selldialog.h b/src/gui/widgets/selldialog.h
index 709756990..5b907b882 100644
--- a/src/gui/widgets/selldialog.h
+++ b/src/gui/widgets/selldialog.h
@@ -23,6 +23,7 @@
 #ifndef GUI_WIDGETS_SELLDIALOG_H
 #define GUI_WIDGETS_SELLDIALOG_H
 
+#include "enums/simpletypes/advanced.h"
 #include "enums/simpletypes/issell.h"
 #include "enums/simpletypes/itemcolor.h"
 
@@ -54,7 +55,7 @@ class SellDialog notfinal : public Window,
          * Constructor.
          */
         SellDialog(const IsSell isSell,
-                   const bool advanced);
+                   const Advanced advanced);
 
         A_DELETE_COPY(SellDialog)
 
@@ -146,7 +147,7 @@ class SellDialog notfinal : public Window,
         int mAmountItems;
 
         IsSell mIsSell;
-        bool mAdvanced;
+        Advanced mAdvanced;
 };
 
 #endif  // GUI_WIDGETS_SELLDIALOG_H
diff --git a/src/gui/windows/buyingstoreselldialog.cpp b/src/gui/windows/buyingstoreselldialog.cpp
index bfb3a5ca3..a93ee53f6 100644
--- a/src/gui/windows/buyingstoreselldialog.cpp
+++ b/src/gui/windows/buyingstoreselldialog.cpp
@@ -38,7 +38,7 @@
 
 BuyingStoreSellDialog::BuyingStoreSellDialog(const BeingId accountId,
                                              const int storeId) :
-    SellDialog(IsSell_true, false),
+    SellDialog(IsSell_true, Advanced_false),
     mAccountId(accountId),
     mStoreId(storeId)
 {
diff --git a/src/gui/windows/eggselectiondialog.cpp b/src/gui/windows/eggselectiondialog.cpp
index 03c10a87b..81c283b8c 100644
--- a/src/gui/windows/eggselectiondialog.cpp
+++ b/src/gui/windows/eggselectiondialog.cpp
@@ -36,7 +36,7 @@
 #include "debug.h"
 
 EggSelectionDialog::EggSelectionDialog() :
-    SellDialog(IsSell_false, false)
+    SellDialog(IsSell_false, Advanced_false)
 {
     // TRANSLATORS: egg selection dialog name
     setWindowName(_("Select egg"));
diff --git a/src/gui/windows/insertcarddialog.cpp b/src/gui/windows/insertcarddialog.cpp
index 7261e0f39..1c8800f88 100644
--- a/src/gui/windows/insertcarddialog.cpp
+++ b/src/gui/windows/insertcarddialog.cpp
@@ -38,7 +38,7 @@
 
 InsertCardDialog::InsertCardDialog(const int itemIndex,
                                    const Item *const item) :
-    SellDialog(IsSell_false, false),
+    SellDialog(IsSell_false, Advanced_false),
     mItemIndex(itemIndex)
 {
     // TRANSLATORS: insert card dialog name
diff --git a/src/gui/windows/npcselldialog.cpp b/src/gui/windows/npcselldialog.cpp
index 98972ef8f..258487424 100644
--- a/src/gui/windows/npcselldialog.cpp
+++ b/src/gui/windows/npcselldialog.cpp
@@ -46,7 +46,8 @@
 
 NpcSellDialog::NpcSellDialog(const BeingId npcId) :
     SellDialog(IsSell_true,
-        serverFeatures ? serverFeatures->haveAdvancedBuySell() : false),
+        (serverFeatures && serverFeatures->haveAdvancedBuySell()) ?
+        Advanced_true : Advanced_false),
     mNpcId(npcId)
 {
 }
@@ -81,7 +82,7 @@ void NpcSellDialog::sellAction(const ActionEvent &event)
         }
     }
 
-    if (mAdvanced)
+    if (mAdvanced == Advanced_true)
         sellManyItems(event.getId());
     else
         sellOneItem();
diff --git a/src/gui/windows/shopselldialog.cpp b/src/gui/windows/shopselldialog.cpp
index c14e09fee..8accd511e 100644
--- a/src/gui/windows/shopselldialog.cpp
+++ b/src/gui/windows/shopselldialog.cpp
@@ -35,7 +35,7 @@
 #include "debug.h"
 
 ShopSellDialog::ShopSellDialog(const std::string &nick) :
-    SellDialog(IsSell_true, false),
+    SellDialog(IsSell_true, Advanced_false),
     mNick(nick)
 {
 }