diff --git a/compiler/lib/backend/ast/semantizer/semantizer.cpp b/compiler/lib/backend/ast/semantizer/semantizer.cpp
index 5da1e0e3..d9f07e29 100644
--- a/compiler/lib/backend/ast/semantizer/semantizer.cpp
+++ b/compiler/lib/backend/ast/semantizer/semantizer.cpp
@@ -1,5 +1,7 @@
 #include "semantizer/semantizer.hpp"
 
+#include "compiler/ast/types.hpp"
+
 using namespace semantizer;
 using namespace ast;