diff --git a/arangod/VocBase/collection.h b/arangod/VocBase/collection.h
index c9ba519053..097e533661 100644
--- a/arangod/VocBase/collection.h
+++ b/arangod/VocBase/collection.h
@@ -69,18 +69,6 @@ class Slice;
 
 #define TRI_COL_VERSION TRI_COL_VERSION_20
 
-////////////////////////////////////////////////////////////////////////////////
-/// @brief predefined system collection name for transactions
-////////////////////////////////////////////////////////////////////////////////
-
-#define TRI_COL_NAME_TRANSACTION "_trx"
-
-////////////////////////////////////////////////////////////////////////////////
-/// @brief predefined system collection name for replication
-////////////////////////////////////////////////////////////////////////////////
-
-#define TRI_COL_NAME_REPLICATION "_replication"
-
 ////////////////////////////////////////////////////////////////////////////////
 /// @brief predefined collection name for users
 ////////////////////////////////////////////////////////////////////////////////
diff --git a/arangod/VocBase/replication-common.cpp b/arangod/VocBase/replication-common.cpp
index 5a77029fcf..ab504d8645 100644
--- a/arangod/VocBase/replication-common.cpp
+++ b/arangod/VocBase/replication-common.cpp
@@ -73,9 +73,7 @@ bool TRI_ExcludeCollectionReplication(char const* name, bool includeSystem) {
     return true;
   }
 
-  if (TRI_EqualString(name, TRI_COL_NAME_REPLICATION) ||
-      TRI_EqualString(name, TRI_COL_NAME_TRANSACTION) ||
-      TRI_IsPrefixString(name, TRI_COL_NAME_STATISTICS) ||
+  if (TRI_IsPrefixString(name, TRI_COL_NAME_STATISTICS) ||
       TRI_EqualString(name, "_apps") ||
       TRI_EqualString(name, "_configuration") ||
       TRI_EqualString(name, "_cluster_kickstarter_plans") ||