diff --git a/libraries/AP_GPS/AP_GPS_IMU.h b/libraries/AP_GPS/AP_GPS_IMU.h
index a50bce01bf..73c755812a 100644
--- a/libraries/AP_GPS/AP_GPS_IMU.h
+++ b/libraries/AP_GPS/AP_GPS_IMU.h
@@ -1,48 +1,48 @@
-
-// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: t -*-
-#ifndef AP_GPS_IMU_h
-#define AP_GPS_IMU_h
-
-#include "GPS.h"
-#define MAXPAYLOAD 32
-
-class AP_GPS_IMU : public GPS {
-public:
-
-    // Methods
-    AP_GPS_IMU(Stream *s);
-    virtual void init(enum GPS_Engine_Setting nav_setting);
-    virtual bool read(void);
-
-    // Properties
-    int32_t roll_sensor;            // how much we're turning in deg * 100
-    int32_t pitch_sensor;           // our angle of attack in deg * 100
-    int16_t airspeed;
-    float   imu_health;
-    uint8_t imu_ok;
-
-    // Unused
-    virtual void setHIL(uint32_t time, float latitude, float longitude, float altitude,
-                        float ground_speed, float ground_course, float speed_3d, uint8_t num_sats);
-
-private:
-    // Packet checksums
-    uint8_t ck_a;
-    uint8_t ck_b;
-    uint8_t GPS_ck_a;
-    uint8_t GPS_ck_b;
-
-    uint8_t step;
-    uint8_t msg_class;
-    uint8_t message_num;
-    uint8_t payload_length;
-    uint8_t payload_counter;
-    uint8_t buffer[MAXPAYLOAD];
-
-    void join_data();
-    void join_data_xplane();
-    void GPS_join_data();
-    void checksum(unsigned char data);
-};
-
-#endif
+
+// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: t -*-
+#ifndef AP_GPS_IMU_h
+#define AP_GPS_IMU_h
+
+#include "GPS.h"
+#define MAXPAYLOAD 32
+
+class AP_GPS_IMU : public GPS {
+public:
+
+    // Methods
+    AP_GPS_IMU(Stream *s);
+    virtual void init(enum GPS_Engine_Setting nav_setting);
+    virtual bool read(void);
+
+    // Properties
+    int32_t roll_sensor;            // how much we're turning in deg * 100
+    int32_t pitch_sensor;           // our angle of attack in deg * 100
+    int16_t airspeed;
+    float imu_health;
+    uint8_t imu_ok;
+
+    // Unused
+    virtual void setHIL(uint32_t time, float latitude, float longitude, float altitude,
+                        float ground_speed, float ground_course, float speed_3d, uint8_t num_sats);
+
+private:
+    // Packet checksums
+    uint8_t ck_a;
+    uint8_t ck_b;
+    uint8_t GPS_ck_a;
+    uint8_t GPS_ck_b;
+
+    uint8_t step;
+    uint8_t msg_class;
+    uint8_t message_num;
+    uint8_t payload_length;
+    uint8_t payload_counter;
+    uint8_t buffer[MAXPAYLOAD];
+
+    void join_data();
+    void join_data_xplane();
+    void GPS_join_data();
+    void checksum(unsigned char data);
+};
+
+#endif