diff --git a/qgroundcontrol.pri b/qgroundcontrol.pri
index fd7c590..88d42d8 100644
--- a/qgroundcontrol.pri
+++ b/qgroundcontrol.pri
@@ -18,7 +18,7 @@
 # -------------------------------------------------
 
 message(Qt version $$[QT_VERSION])
-message(Using Qt from $(QTDIR))
+message(Using Qt from $$(QTDIR))
 
 QT_DIR = $$(QTDIR)
 
diff --git a/qgroundcontrol.pro b/qgroundcontrol.pro
index 7b645d1..93c4ec3 100644
--- a/qgroundcontrol.pro
+++ b/qgroundcontrol.pro
@@ -360,6 +360,7 @@ SOURCES += src/main.cc \
     src/uas/UASManager.cc \
     src/uas/UAS.cc \
     src/comm/LinkManager.cc \
+    src/comm/LinkInterface.cpp \
     src/comm/SerialLink.cc \
     src/comm/SerialSimulationLink.cc \
     src/comm/MAVLinkProtocol.cc \
diff --git a/src/comm/LinkInterface.cpp b/src/comm/LinkInterface.cpp
new file mode 100644
index 0000000..1c30413
--- /dev/null
+++ b/src/comm/LinkInterface.cpp
@@ -0,0 +1,6 @@
+#include "LinkInterface.h"
+
+LinkInterface::~LinkInterface()
+{
+	emit this->deleteLink(this);
+}
\ No newline at end of file
diff --git a/src/comm/LinkInterface.h b/src/comm/LinkInterface.h
index 8753a6c..72e2dd2 100644
--- a/src/comm/LinkInterface.h
+++ b/src/comm/LinkInterface.h
@@ -44,7 +44,7 @@ class LinkInterface : public QThread
     Q_OBJECT
 public:
     LinkInterface(QObject* parent = 0) : QThread(parent) {}
-    //virtual ~LinkInterface() = 0;
+    virtual ~LinkInterface()=0;
 
     /* Connection management */
 
@@ -232,6 +232,9 @@ signals:
     /** @brief Communication error occured */
     void communicationError(const QString& linkname, const QString& error);
 
+	/** @brief destroying element */
+	void deleteLink(LinkInterface* const link);
+
 protected:
     static int getNextLinkId() {
         static int nextId = 0;
diff --git a/src/ui/DebugConsole.cc b/src/ui/DebugConsole.cc
index f3fab5d..a65e6de 100644
--- a/src/ui/DebugConsole.cc
+++ b/src/ui/DebugConsole.cc
@@ -180,12 +180,12 @@ void DebugConsole::addLink(LinkInterface* link)
 
     // Register for name changes
     connect(link, SIGNAL(nameChanged(QString)), this, SLOT(updateLinkName(QString)));
-    connect(link, SIGNAL(destroyed(QObject*)), this, SLOT(removeLink(QObject*)));
+    connect(link, SIGNAL(deleteLink(LinkInterface* const)), this, SLOT(removeLink(LinkInterface* const)));
 }
 
-void DebugConsole::removeLink(QObject* link)
+void DebugConsole::removeLink(LinkInterface* const linkInterface)
 {
-    LinkInterface* linkInterface = dynamic_cast<LinkInterface*>(link);
+    //LinkInterface* linkInterface = dynamic_cast<LinkInterface*>(link);
     // Add link to link list
     if (links.contains(linkInterface)) {
         int linkIndex = links.indexOf(linkInterface);
@@ -194,7 +194,7 @@ void DebugConsole::removeLink(QObject* link)
 
         m_ui->linkComboBox->removeItem(linkIndex);
     }
-    if (link == currLink) currLink = NULL;
+    if (linkInterface == currLink) currLink = NULL;
 }
 
 void DebugConsole::linkSelected(int linkId)
diff --git a/src/ui/DebugConsole.h b/src/ui/DebugConsole.h
index 0b77e8c..252e7ee 100644
--- a/src/ui/DebugConsole.h
+++ b/src/ui/DebugConsole.h
@@ -62,7 +62,7 @@ public slots:
     /** @brief Add a link to the list of monitored links */
     void addLink(LinkInterface* link);
     /** @brief Remove a link from the list */
-    void removeLink(QObject* link);
+    void removeLink(LinkInterface* const link);
     /** @brief Update a link name */
     void updateLinkName(QString name);
     /** @brief Select a link for the active view */