diff --git a/src/ExprNode.hh b/src/ExprNode.hh
index 771cedda..ef233e6b 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 7ddf92b6..c09e83aa 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;