diff --git a/src/qmljsc/compiler.cpp b/src/qmljsc/compiler.cpp
index d85facf..9304126 100644
--- a/src/qmljsc/compiler.cpp
+++ b/src/qmljsc/compiler.cpp
@@ -1,38 +1,33 @@
 /*
  * <one line to give the program's name and a brief idea of what it does.>
  * Copyright (C) 2015  Jan Marker <jan@jangmarker.de>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
 
 #include "symboltable.h"
 
 #include "compiler.h"
 
 using namespace QmlJSc;
 
-QmlJSc::Compiler* QmlJSc::Compiler::s_self = 0;
-
 QmlJSc::Compiler::Compiler(QObject *parent)
     : QObject(parent)
 {
-    Q_ASSERT_X(!s_self, "QmlJSc::QmlJSc", "QmlJSc should only exist once.");
-    s_self = this;
 }
 
 QmlJSc::Compiler::~Compiler()
 {
-    s_self = 0;
 }
diff --git a/src/qmljsc/compiler.h b/src/qmljsc/compiler.h
index 828679c..0c38781 100644
--- a/src/qmljsc/compiler.h
+++ b/src/qmljsc/compiler.h
@@ -1,48 +1,41 @@
 /*
  * <one line to give the program's name and a brief idea of what it does.>
  * Copyright (C) 2015  Jan Marker <jan@jangmarker.de>
  * Copyright (C) 2015  Anton Kreuzkamp <akreuzkamp@web.de>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
 
 #ifndef QMLJSC_H
 #define QMLJSC_H
 
 #include <QtCore/QObject>
 
 namespace QmlJSc {
 
-class SymbolTable;
-
-#define compiler QmlJSc::Compiler::instance()
-
 class Compiler : public QObject
 {
     Q_OBJECT
 
 public:
     explicit Compiler(QObject *parent = 0);
     virtual ~Compiler();
 
-    static Compiler* instance() { return s_self; }
-
 private:
-    static Compiler* s_self;
 };
 
 }
 
 #endif // QMLJSC_H