diff --git a/src/libs/3rdparty/libptyqt/conptyprocess.cpp b/src/libs/3rdparty/libptyqt/conptyprocess.cpp
index 94bb53b5832..c957e0bdd9e 100644
--- a/src/libs/3rdparty/libptyqt/conptyprocess.cpp
+++ b/src/libs/3rdparty/libptyqt/conptyprocess.cpp
@@ -1132,10 +1132,6 @@ qint64 ConPtyProcess::write(const QByteArray &byteArray)
 
 bool ConPtyProcess::isAvailable()
 {
-#ifdef TOO_OLD_WINSDK
-    return false; //very importnant! ConPty can be built, but it doesn't work if built with old sdk and Win10 < 1903
-#endif
-
     qint32 buildNumber = QSysInfo::kernelVersion().split(".").last().toInt();
     if (buildNumber < CONPTY_MINIMAL_WINDOWS_VERSION)
         return false;
diff --git a/src/libs/3rdparty/libptyqt/conptyprocess.h b/src/libs/3rdparty/libptyqt/conptyprocess.h
index aaf56fe76f1..0f30288dab9 100644
--- a/src/libs/3rdparty/libptyqt/conptyprocess.h
+++ b/src/libs/3rdparty/libptyqt/conptyprocess.h
@@ -20,7 +20,6 @@
 
 typedef VOID* HPCON;
 
-#define TOO_OLD_WINSDK
 #endif
 
 class QWinEventNotifier;