diff --git a/libraries/AP_RangeFinder/RangeFinder_Backend.h b/libraries/AP_RangeFinder/RangeFinder_Backend.h
index 2be2caad1a..9097e0e999 100644
--- a/libraries/AP_RangeFinder/RangeFinder_Backend.h
+++ b/libraries/AP_RangeFinder/RangeFinder_Backend.h
@@ -55,7 +55,7 @@ public:
     // in metres relative to the body frame origin
     const Vector3f &get_pos_offset() const { return state.pos_offset; }
 
-    // return system time of last successful read from the sensor (used for DPTH logging)
+    // return system time of last successful read from the sensor
     uint32_t last_reading_ms() const { return state.last_reading_ms; }
 
 protected: