diff --git a/Blimp/Blimp.h b/Blimp/Blimp.h
index 8923e6bd1ceb3..32ac39b5bddf4 100644
--- a/Blimp/Blimp.h
+++ b/Blimp/Blimp.h
@@ -175,7 +175,7 @@ class Blimp : public AP_Vehicle
 
     RCMapper rcmap;
 
-    // intertial nav alt when we armed
+    // inertial nav alt when we armed
     float arming_altitude_m;
 
     // Failsafe
diff --git a/Blimp/Fins.h b/Blimp/Fins.h
index 6e225580385e3..89541eea7cd97 100644
--- a/Blimp/Fins.h
+++ b/Blimp/Fins.h
@@ -50,7 +50,7 @@ class Fins
     uint16_t            _speed_hz;                  // speed in hz to send updates to motors
     float               _throttle_avg_max;          // last throttle input from set_throttle_avg_max
 
-    float               _time;                       //current timestep
+    float               _time;                       // current timestamp
 
     bool _armed;             // 0 if disarmed, 1 if armed