diff --git a/src/misc/smallvec.h b/src/misc/smallvec.h
index 7f85cc96a8..9fc212dbef 100644
--- a/src/misc/smallvec.h
+++ b/src/misc/smallvec.h
@@ -5,6 +5,9 @@
 #ifndef SMALLVEC_H
 #define SMALLVEC_H
 
+#include "../core/alloc_func.hpp"
+#include "../core/math_func.hpp"
+
 template <typename T, uint S>
 struct SmallVector {
 	T *data;
diff --git a/src/sortlist_type.h b/src/sortlist_type.h
index 46dcc08395..46185d503f 100644
--- a/src/sortlist_type.h
+++ b/src/sortlist_type.h
@@ -5,6 +5,8 @@
 #ifndef SORTLIST_TYPE_H
 #define SORTLIST_TYPE_H
 
+#include "core/enum_type.hpp"
+#include "core/bitmath_func.hpp"
 #include "misc/smallvec.h"
 #include "date_type.h"