diff --git a/include/imu/factor/factor_imu.h b/include/imu/factor/factor_imu.h
index a7ff2d7b063657ec39fff82552fceedf82999847..0d52b68b7a005597b958d90a334a620819f581fe 100644
--- a/include/imu/factor/factor_imu.h
+++ b/include/imu/factor/factor_imu.h
@@ -4,6 +4,7 @@
 //Wolf includes
 #include "imu/feature/feature_imu.h"
 #include "imu/sensor/sensor_imu.h"
+#include "imu/processor/processor_imu.h"
 #include "core/factor/factor_autodiff.h"
 #include "core/math/rotations.h"