diff --git a/DataStructures/SearchEngineData.h b/DataStructures/SearchEngineData.h
index 7833ad1b0..5f9e48ab6 100644
--- a/DataStructures/SearchEngineData.h
+++ b/DataStructures/SearchEngineData.h
@@ -57,11 +57,4 @@ struct SearchEngineData {
     void InitializeOrClearThirdThreadLocalStorage(const unsigned number_of_nodes);
 };
 
-SearchEngineData::SearchEngineHeapPtr SearchEngineData::forwardHeap;
-SearchEngineData::SearchEngineHeapPtr SearchEngineData::backwardHeap;
-SearchEngineData::SearchEngineHeapPtr SearchEngineData::forwardHeap2;
-SearchEngineData::SearchEngineHeapPtr SearchEngineData::backwardHeap2;
-SearchEngineData::SearchEngineHeapPtr SearchEngineData::forwardHeap3;
-SearchEngineData::SearchEngineHeapPtr SearchEngineData::backwardHeap3;
-
 #endif // SEARCH_ENGINE_DATA_H
diff --git a/RoutingAlgorithms/BasicRoutingInterface.h b/RoutingAlgorithms/BasicRoutingInterface.h
index 8661e9747..ea40ae917 100644
--- a/RoutingAlgorithms/BasicRoutingInterface.h
+++ b/RoutingAlgorithms/BasicRoutingInterface.h
@@ -35,6 +35,13 @@ or see http://www.gnu.org/licenses/agpl.txt.
 
 #include <stack>
 
+SearchEngineData::SearchEngineHeapPtr SearchEngineData::forwardHeap;
+SearchEngineData::SearchEngineHeapPtr SearchEngineData::backwardHeap;
+SearchEngineData::SearchEngineHeapPtr SearchEngineData::forwardHeap2;
+SearchEngineData::SearchEngineHeapPtr SearchEngineData::backwardHeap2;
+SearchEngineData::SearchEngineHeapPtr SearchEngineData::forwardHeap3;
+SearchEngineData::SearchEngineHeapPtr SearchEngineData::backwardHeap3;
+
 template<class DataFacadeT>
 class BasicRoutingInterface : boost::noncopyable {
 protected: