diff --git a/DataStructures/SearchEngine.h b/DataStructures/SearchEngine.h
index 0945befb2..e0fb41db7 100644
--- a/DataStructures/SearchEngine.h
+++ b/DataStructures/SearchEngine.h
@@ -64,13 +64,4 @@ public:
 
 };
 
-// SearchEngineHeapPtr SearchEngineData::forwardHeap;
-// SearchEngineHeapPtr SearchEngineData::backwardHeap;
-
-// SearchEngineHeapPtr SearchEngineData::forwardHeap2;
-// SearchEngineHeapPtr SearchEngineData::backwardHeap2;
-
-// SearchEngineHeapPtr SearchEngineData::forwardHeap3;
-// SearchEngineHeapPtr SearchEngineData::backwardHeap3;
-
 #endif // SEARCHENGINE_H