diff --git a/src/ExprNode.hh b/src/ExprNode.hh
index 771cedda99855faf5b8847b571cfe48665257a7b..ef233e6b70d13d0d1dff4084e869d318246aedb9 100644
--- a/src/ExprNode.hh
+++ b/src/ExprNode.hh
@@ -28,10 +28,8 @@
 
 using namespace std;
 
-#include "SymbolTable.hh"
 #include "CodeInterpreter.hh"
 #include "ExternalFunctionsTable.hh"
-#include "SymbolList.hh"
 
 class DataTree;
 class NumConstNode;
diff --git a/src/SubModel.hh b/src/SubModel.hh
index 7ddf92b629b02b0521dbae55bf1e3c4a8a081bd7..c09e83aa7eaae18cc3525692c8b511fb6d56863f 100644
--- a/src/SubModel.hh
+++ b/src/SubModel.hh
@@ -27,6 +27,7 @@
 
 #include "ExprNode.hh"
 #include "SymbolTable.hh"
+#include "SymbolList.hh"
 
 using namespace std;