diff --git a/arangod/Indexes/skiplist-helper.cpp b/arangod/Indexes/skiplist-helper.cpp
index 43215d7106..1b900242e4 100644
--- a/arangod/Indexes/skiplist-helper.cpp
+++ b/arangod/Indexes/skiplist-helper.cpp
@@ -125,7 +125,7 @@ static int CmpElmElm (void* sli,
 
   SkiplistIndex* skiplistindex = static_cast<SkiplistIndex*>(sli);
   if (leftElement == rightElement ||
-      (!skiplistindex->skiplist->isArray() && leftElement->document() == rightElement->document())) {
+      (! skiplistindex->skiplist->isArray() && leftElement->document() == rightElement->document())) {
     return 0;
   }
 
@@ -973,14 +973,6 @@ TRI_skiplist_iterator_t* SkiplistIndex_find (SkiplistIndex* skiplistIndex,
   return results;
 }
 
-////////////////////////////////////////////////////////////////////////////////
-/// @brief returns the number of elements in the skip list index
-////////////////////////////////////////////////////////////////////////////////
-
-uint64_t SkiplistIndex_getNrUsed (SkiplistIndex* skiplistIndex) {
-  return skiplistIndex->skiplist->getNrUsed();
-}
-
 ////////////////////////////////////////////////////////////////////////////////
 /// @brief returns the memory used by the index
 ////////////////////////////////////////////////////////////////////////////////
diff --git a/arangod/Indexes/skiplist-helper.h b/arangod/Indexes/skiplist-helper.h
index 83fa48a221..07c5453eaf 100644
--- a/arangod/Indexes/skiplist-helper.h
+++ b/arangod/Indexes/skiplist-helper.h
@@ -143,15 +143,6 @@ TRI_skiplist_iterator_t* SkiplistIndex_find (SkiplistIndex*,
                                              TRI_index_operator_t const*,
                                              bool);
 
-bool SkiplistIndex_update (SkiplistIndex*, const TRI_index_element_t*,
-                           const TRI_index_element_t*);
-
-////////////////////////////////////////////////////////////////////////////////
-/// @brief return the number of elements in the index
-////////////////////////////////////////////////////////////////////////////////
-
-uint64_t SkiplistIndex_getNrUsed (SkiplistIndex*);
-
 ////////////////////////////////////////////////////////////////////////////////
 /// @brief return the memory used by the index
 ////////////////////////////////////////////////////////////////////////////////