diff --git a/Util/OpenMPReplacement.h b/Util/OpenMPReplacement.h
new file mode 100644
index 000000000..c92324676
--- /dev/null
+++ b/Util/OpenMPReplacement.h
@@ -0,0 +1,25 @@
+/*
+    open source routing machine
+    Copyright (C) Dennis Luxen, others 2010
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU AFFERO General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+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 Affero General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+or see http://www.gnu.org/licenses/agpl.txt.
+
+*/
+
+const int omp_get_num_procs() { return 1; }
+const int omp_get_max_threads() { return 1; }
+const int omp_get_thread_num() { return 0; }
+const int omp_set_num_threads(int i) {}
diff --git a/createHierarchy.cpp b/createHierarchy.cpp
index 0464e36eb..f9c68578d 100644
--- a/createHierarchy.cpp
+++ b/createHierarchy.cpp
@@ -37,12 +37,9 @@ or see http://www.gnu.org/licenses/agpl.txt.
 #include <vector>
 
 #ifdef _OPENMP
-#include <omp.h>
+#include <omp.h>  	
 #else
-int omp_get_num_procs() { return 1; }
-int omp_get_max_threads() { return 1; }
-int omp_get_thread_num() { return 0; }
-int omp_set_num_threads(int i) {}
+#include "Util/OpenMPReplacement.h"
 #endif
 
 #include "typedefs.h"
diff --git a/extractor.cpp b/extractor.cpp
index 11517362b..0f9e398af 100644
--- a/extractor.cpp
+++ b/extractor.cpp
@@ -17,6 +17,7 @@ along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 or see http://www.gnu.org/licenses/agpl.txt.
  */
+
 #ifdef STXXL_VERBOSE_LEVEL
 #undef STXXL_VERBOSE_LEVEL
 #endif
@@ -42,6 +43,12 @@ or see http://www.gnu.org/licenses/agpl.txt.
 #include <unistd.h>
 #include <stxxl.h>
 
+#ifdef _OPENMP
+#include <omp.h>  	
+#else
+#include "Util/OpenMPReplacement.h"
+#endif
+
 #include "typedefs.h"
 #include "DataStructures/InputReaderFactory.h"
 #include "DataStructures/ExtractorCallBacks.h"
diff --git a/routed.cpp b/routed.cpp
index 69595921f..80f0b4ac4 100644
--- a/routed.cpp
+++ b/routed.cpp
@@ -21,17 +21,15 @@ or see http://www.gnu.org/licenses/agpl.txt.
 #include <iostream>
 #include <signal.h>
 
-#ifdef _OPENMP
-#include <omp.h>
-#else 
-int omp_get_num_procs() { return 1; }
-int omp_get_max_threads() { return 1; }
-int omp_get_thread_num() { return 0; }
-#endif
-
 #include <boost/thread.hpp>
 #include <boost/bind.hpp>
 
+#ifdef _OPENMP
+#include <omp.h>  	
+#else
+#include "Util/OpenMPReplacement.h"
+#endif
+
 #include "Server/ServerConfiguration.h"
 #include "Server/ServerFactory.h"