diff --git a/include/poet/DiffusionModule.hpp b/include/poet/DiffusionModule.hpp
index 63c514189..e2ac32466 100644
--- a/include/poet/DiffusionModule.hpp
+++ b/include/poet/DiffusionModule.hpp
@@ -23,7 +23,6 @@
 
 #include "poet/SimParams.hpp"
 #include <array>
-#include <bits/stdint-uintn.h>
 #include <cmath>
 #include <poet/Grid.hpp>
 #include <string>
diff --git a/src/DiffusionModule.cpp b/src/DiffusionModule.cpp
index f2dd35567..c3d37ee75 100644
--- a/src/DiffusionModule.cpp
+++ b/src/DiffusionModule.cpp
@@ -23,7 +23,6 @@
 #include "tug/Diffusion.hpp"
 #include <Rcpp.h>
 #include <algorithm>
-#include <bits/stdint-intn.h>
 #include <cstdint>
 #include <poet/DiffusionModule.hpp>
 #include <poet/Grid.hpp>