diff --git a/calculations.cpp b/calculations.cpp
index eba95d4..52869c5 100644
--- a/calculations.cpp
+++ b/calculations.cpp
@@ -2,6 +2,7 @@
 #include <algorithm>
 #include <cassert>
 #include "catima/calculations.h"
+#include "catima/build_config.h"
 #include "catima/constants.h"
 #include "catima/data_ionisation_potential.h"
 #include "catima/data_atima.h"
diff --git a/storage.h b/storage.h
index 8e2d5f8..dfe444c 100644
--- a/storage.h
+++ b/storage.h
@@ -22,6 +22,7 @@
 #include <cmath>
 //#include <unordered_set>
 #include <gsl/gsl_spline.h>
+#include "catima/build_config.h"
 #include "catima/constants.h"
 #include "catima/structures.h"
 #include "catima/config.h"