diff --git a/alib2data/src/common/ranked_symbol.hpp b/alib2data/src/common/ranked_symbol.hpp
index de912a3af03f4467520fe1f5f732176f5443e7c7..3e1221c6ef09b17ff3576b2c05d395664f021cbc 100644
--- a/alib2data/src/common/ranked_symbol.hpp
+++ b/alib2data/src/common/ranked_symbol.hpp
@@ -11,7 +11,6 @@
 #include <alib/tuple>
 
 #include <core/normalize.hpp>
-#include <sax/FromXMLParserHelper.h>
 
 #include <common/DefaultSymbolType.h>
 #include <common/DefaultRankType.h>
diff --git a/alib2data/src/rte/formal/FormalRTEElement.h b/alib2data/src/rte/formal/FormalRTEElement.h
index 9b89bba038accc678db4148b6cffc3af6711a01d..db7bcfcbef37243d96ba4cc2226b32bb543fe93b 100644
--- a/alib2data/src/rte/formal/FormalRTEElement.h
+++ b/alib2data/src/rte/formal/FormalRTEElement.h
@@ -25,7 +25,6 @@
 #define FORMAL_RTE_ELEMENT_H_
 
 #include <common/ranked_symbol.hpp>
-#include <alphabet/xml/RankedSymbol.h>
 #include <alib/set>
 #include <alib/tree>
 #include <alib/compare>
diff --git a/alib2raw/src/tree/raw/UnrankedTree.h b/alib2raw/src/tree/raw/UnrankedTree.h
index 47140962d5ca04f890e109ff9656c9e125b2d6ae..26af867c55f706cffcb6b1e0c5597aabb1d2367b 100644
--- a/alib2raw/src/tree/raw/UnrankedTree.h
+++ b/alib2raw/src/tree/raw/UnrankedTree.h
@@ -10,6 +10,7 @@
 
 #include <tree/unranked/UnrankedTree.h>
 #include <sax/SaxParseInterface.h>
+#include <sax/FromXMLParserHelper.h>
 #include <sax/SaxComposeInterface.h>
 #include <core/rawApi.hpp>