diff --git a/src/reshade/effect_expression.hpp b/src/reshade/effect_expression.hpp
index d6ad413..243e541 100644
--- a/src/reshade/effect_expression.hpp
+++ b/src/reshade/effect_expression.hpp
@@ -6,6 +6,7 @@
 #pragma once
 
 #include "effect_token.hpp"
+#include <stdint.h>
 
 namespace reshadefx
 {
diff --git a/src/reshade/effect_lexer.cpp b/src/reshade/effect_lexer.cpp
index d88d7f1..26a8ae2 100644
--- a/src/reshade/effect_lexer.cpp
+++ b/src/reshade/effect_lexer.cpp
@@ -5,6 +5,7 @@
 
 #include "effect_lexer.hpp"
 #include <unordered_map> // Used for static lookup tables
+#include <stdint.h>
 
 using namespace reshadefx;