diff --git a/rviz_imu_plugin/src/imu_acc_visual.cpp b/rviz_imu_plugin/src/imu_acc_visual.cpp
index 2f265942..bdfb5885 100644
--- a/rviz_imu_plugin/src/imu_acc_visual.cpp
+++ b/rviz_imu_plugin/src/imu_acc_visual.cpp
@@ -35,6 +35,7 @@ namespace rviz {
 ImuAccVisual::ImuAccVisual(Ogre::SceneManager* scene_manager,
                            Ogre::SceneNode* parent_node)
     : acc_vector_(NULL),
+      direction_(0, 0, 1),
       arrow_length_(9.81),
       arrow_radius_(0.50),
       head_length_(1.00),
diff --git a/rviz_imu_plugin/src/imu_acc_visual.h b/rviz_imu_plugin/src/imu_acc_visual.h
index 8272d291..fb1bd8eb 100644
--- a/rviz_imu_plugin/src/imu_acc_visual.h
+++ b/rviz_imu_plugin/src/imu_acc_visual.h
@@ -31,7 +31,7 @@
 #define RVIZ_IMU_PLUGIN_IMU_ACC_VISUAL_H
 
 #include <sensor_msgs/Imu.h>
-#include <OGRE/OgreVector3.h>
+#include <OGRE/Ogre.h>
 #include <OGRE/OgreSceneNode.h>
 #include <OGRE/OgreSceneManager.h>
 #include <rviz/ogre_helpers/arrow.h>