diff --git a/src/lib/app/datapaths.h b/src/lib/app/datapaths.h
--- a/src/lib/app/datapaths.h
+++ b/src/lib/app/datapaths.h
@@ -42,6 +42,7 @@
     };
 
     explicit DataPaths();
+    ~DataPaths();
 
     // Set absolute path of current profile
     static void setCurrentProfilePath(const QString &profilePath);
diff --git a/src/lib/app/datapaths.cpp b/src/lib/app/datapaths.cpp
--- a/src/lib/app/datapaths.cpp
+++ b/src/lib/app/datapaths.cpp
@@ -31,6 +31,10 @@
     init();
 }
 
+DataPaths::~DataPaths()
+{
+}
+
 // static
 void DataPaths::setCurrentProfilePath(const QString &profilePath)
 {
diff --git a/src/lib/downloads/downloaditem.cpp b/src/lib/downloads/downloaditem.cpp
--- a/src/lib/downloads/downloaditem.cpp
+++ b/src/lib/downloads/downloaditem.cpp
@@ -39,6 +39,7 @@
 
 #ifdef Q_OS_WIN
 #include "Shlwapi.h"
+#include "shellapi.h"
 #endif
 
 //#define DOWNMANAGER_DEBUG
diff --git a/src/lib/other/registerqappassociation.cpp b/src/lib/other/registerqappassociation.cpp
--- a/src/lib/other/registerqappassociation.cpp
+++ b/src/lib/other/registerqappassociation.cpp
@@ -21,7 +21,9 @@
 #include "mainapplication.h"
 #include "browserwindow.h"
 
+#define  _WIN32_WINNT   0x0602
 #include "ShlObj.h"
+
 #include <QMessageBox>
 #include <QStringList>
 #include <QSettings>