diff --git a/pid/fancontroller.cpp b/pid/fancontroller.cpp
index 9b54714..5598c4f 100644
--- a/pid/fancontroller.cpp
+++ b/pid/fancontroller.cpp
@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+#include "config.h"
 
 #include "fancontroller.hpp"