diff --git a/ArduCopter/defines.h b/ArduCopter/defines.h
index 00f9fa7030..96a1ad080a 100644
--- a/ArduCopter/defines.h
+++ b/ArduCopter/defines.h
@@ -435,7 +435,7 @@ enum ap_message {
 #define ERROR_SUBSYSTEM_FAILSAFE_GPS        7
 #define ERROR_SUBSYSTEM_FAILSAFE_GCS        8
 #define ERROR_SUBSYSTEM_FAILSAFE_FENCE      9
-#define ERROR_SUBSYSTEM_FLGHT_MODE          10
+#define ERROR_SUBSYSTEM_FLIGHT_MODE         10
 #define ERROR_SUBSYSTEM_GPS                 11
 // general error codes
 #define ERROR_CODE_ERROR_RESOLVED           0
diff --git a/ArduCopter/system.pde b/ArduCopter/system.pde
index b0c5f69b10..94942b4bf6 100644
--- a/ArduCopter/system.pde
+++ b/ArduCopter/system.pde
@@ -479,7 +479,7 @@ static bool set_mode(uint8_t mode)
         Log_Write_Mode(control_mode);
     }else{
         // Log error that we failed to enter desired flight mode
-        Log_Write_Error(ERROR_SUBSYSTEM_FLGHT_MODE,mode);
+        Log_Write_Error(ERROR_SUBSYSTEM_FLIGHT_MODE,mode);
     }
 
     // return success or failure