diff --git a/source/source_lcao/module_lr/test/test_xc_kxc.cpp b/source/source_lcao/module_lr/test/test_xc_kxc.cpp
index 723c3901d3..c4b0584538 100644
--- a/source/source_lcao/module_lr/test/test_xc_kxc.cpp
+++ b/source/source_lcao/module_lr/test/test_xc_kxc.cpp
@@ -1,5 +1,6 @@
 #include "../potentials/xc_kxc.h"
 #include <xc.h>
+#include <xc_funcs.h>
 #include <gtest/gtest.h>
 #include <stdexcept>
 #include <string>
diff --git a/source/source_pw/module_dfpt/test_serial/dfpt_xc_analytic_serial_test.cpp b/source/source_pw/module_dfpt/test_serial/dfpt_xc_analytic_serial_test.cpp
index d95b489da6..40d5d18918 100644
--- a/source/source_pw/module_dfpt/test_serial/dfpt_xc_analytic_serial_test.cpp
+++ b/source/source_pw/module_dfpt/test_serial/dfpt_xc_analytic_serial_test.cpp
@@ -8,6 +8,7 @@
 #include "source_basis/module_pw/pw_basis.h"
 
 #include <xc.h>
+#include <xc_funcs.h>
 
 #include <cmath>
 #include <complex>