diff --git a/src/core/windows7thumbbar.cpp b/src/core/windows7thumbbar.cpp
index adbe560df..2a6969656 100644
--- a/src/core/windows7thumbbar.cpp
+++ b/src/core/windows7thumbbar.cpp
@@ -29,10 +29,6 @@
 #include <QTimer>
 #include <QtDebug>
 
-#ifndef _WIN32_WINNT
-#  define _WIN32_WINNT 0x0600
-#endif
-
 #include <windows.h>
 #include <commctrl.h>
 #include <shobjidl.h>
diff --git a/src/main.cpp b/src/main.cpp
index 057d291bc..d0a70f706 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -39,9 +39,6 @@
 #endif
 
 #ifdef Q_OS_WIN32
-#  ifndef _WIN32_WINNT
-#    define _WIN32_WINNT 0x0600
-#  endif
 #  include <windows.h>
 #  include <iostream>
 #endif  // Q_OS_WIN32