diff --git a/pid/fancontroller.cpp b/pid/fancontroller.cpp
index a1290c5..8bbe3f2 100644
--- a/pid/fancontroller.cpp
+++ b/pid/fancontroller.cpp
@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#include "config.h"
+
 #include "fancontroller.hpp"
 
 #include "tuning.hpp"
diff --git a/test/pid_fancontroller_unittest.cpp b/test/pid_fancontroller_unittest.cpp
index 8379113..6075a95 100644
--- a/test/pid_fancontroller_unittest.cpp
+++ b/test/pid_fancontroller_unittest.cpp
@@ -1,3 +1,5 @@
+#include "config.h"
+
 #include "pid/ec/logging.hpp"
 #include "pid/ec/pid.hpp"
 #include "pid/fancontroller.hpp"