1 files changed, 6 insertions, 1 deletions
diff --git a/alc/converter.h b/alc/converter.h
index 033e4d3f..bc51e46a 100644
--- a/alc/converter.h
+++ b/alc/converter.h
@@ -1,11 +1,16 @@
 #ifndef CONVERTER_H
 #define CONVERTER_H
 
+#include <cstddef>
 #include <memory>
 
+#include "AL/al.h"
+
 #include "alcmain.h"
-#include "alu.h"
 #include "almalloc.h"
+#include "alnumeric.h"
+#include "alu.h"
+
 
 struct SampleConverter {
     DevFmtType mSrcType{};