diff --git a/include/phaseshapers.h b/include/phaseshapers.h
index ab0a5c1..de79232 100644
--- a/include/phaseshapers.h
+++ b/include/phaseshapers.h
@@ -10,7 +10,8 @@
 // Alex St-Onge
 // =============================================================================
 #pragma once
-#include <stdint.h>
+#include <cstddef>
+#include <cstdint>
 
 #include "dsp_utils.h"
 
diff --git a/src/basic_oscillators.cpp b/src/basic_oscillators.cpp
index e743adb..00ceb32 100644
--- a/src/basic_oscillators.cpp
+++ b/src/basic_oscillators.cpp
@@ -7,8 +7,6 @@
 #include "dsp_utils.h"
 #include "sin_table.h"
 
-#include <immintrin.h>
-
 #define MOD1(x) (x - std::floor(x))
 
 namespace