Index: src/ResolvExpr/CommonType.cc
===================================================================
--- src/ResolvExpr/CommonType.cc	(revision 6e1e2d0299e4210d269f7a30ec3864a8bddceabb)
+++ src/ResolvExpr/CommonType.cc	(revision 8a919cfec5f277378c3bc7e5d16717f7d44058c6)
@@ -21,4 +21,5 @@
 
 #include "AST/Decl.hpp"
+#include "AST/Pass.hpp"
 #include "AST/Type.hpp"
 #include "Common/PassVisitor.h"
Index: src/ResolvExpr/PolyCost.cc
===================================================================
--- src/ResolvExpr/PolyCost.cc	(revision 6e1e2d0299e4210d269f7a30ec3864a8bddceabb)
+++ src/ResolvExpr/PolyCost.cc	(revision 8a919cfec5f277378c3bc7e5d16717f7d44058c6)
@@ -15,4 +15,5 @@
 
 #include "AST/SymbolTable.hpp"
+#include "AST/Pass.hpp"
 #include "AST/Type.hpp"
 #include "AST/TypeEnvironment.hpp"