3 files changed, 6 insertions, 4 deletions
diff --git a/src/gui/widgets/dropdown.h b/src/gui/widgets/dropdown.h
index e9b61aa43..a769678ca 100644
--- a/src/gui/widgets/dropdown.h
+++ b/src/gui/widgets/dropdown.h
@@ -48,7 +48,7 @@ class DropDown : public gcn::DropDown
          * @param listBox the listBox to use.
          * @see ListModel, ScrollArea, ListBox.
          */
-        DropDown(gcn::ListModel *listModel = 0,
+        DropDown(gcn::ListModel *listModel = nullptr,
                  gcn::ActionListener* listener = nullptr,
                  std::string eventId = "");
 
diff --git a/src/gui/widgets/playerbox.h b/src/gui/widgets/playerbox.h
index a066c104e..d2393ca08 100644
--- a/src/gui/widgets/playerbox.h
+++ b/src/gui/widgets/playerbox.h
@@ -25,6 +25,8 @@
 
 #include <guichan/widgets/scrollarea.hpp>
 
+#include "localconsts.h"
+
 class Being;
 class ImageRect;
 
@@ -40,7 +42,7 @@ class PlayerBox : public gcn::ScrollArea
          * Constructor. Takes the initial player character that this box should
          * display, which defaults to <code>NULL</code>.
          */
-        PlayerBox(const Being *being = 0);
+        PlayerBox(const Being *being = nullptr);
 
         /**
          * Destructor.
diff --git a/src/gui/widgets/progressindicator.cpp b/src/gui/widgets/progressindicator.cpp
index ae94f0a0f..6adb5a2fa 100644
--- a/src/gui/widgets/progressindicator.cpp
+++ b/src/gui/widgets/progressindicator.cpp
@@ -51,7 +51,7 @@ ProgressIndicator::ProgressIndicator()
     }
     else
     {
-        mIndicator = 0;
+        mIndicator = nullptr;
     }
 
     setSize(32, 32);
@@ -60,7 +60,7 @@ ProgressIndicator::ProgressIndicator()
 ProgressIndicator::~ProgressIndicator()
 {
     delete mIndicator;
-    mIndicator = 0;
+    mIndicator = nullptr;
 }
 
 void ProgressIndicator::logic()