Index: src/ResolvExpr/PolyCost.cc
===================================================================
--- src/ResolvExpr/PolyCost.cc	(revision fcd0b9d7282c8c187cc0111baf35ab6d4fb846a2)
+++ src/ResolvExpr/PolyCost.cc	(revision 77fd9fe2224caa2c11720d1aa2c77988cc5643ba)
@@ -15,4 +15,5 @@
 
 #include "AST/SymbolTable.hpp"
+#include "AST/Pass.hpp"
 #include "AST/Type.hpp"
 #include "AST/TypeEnvironment.hpp"