diff --git a/libraries/AP_HAL_SITL/sitl_gps.cpp b/libraries/AP_HAL_SITL/sitl_gps.cpp
index d728688cae..29a3f50596 100644
--- a/libraries/AP_HAL_SITL/sitl_gps.cpp
+++ b/libraries/AP_HAL_SITL/sitl_gps.cpp
@@ -519,7 +519,7 @@ uint16_t SITL_State::_gps_nmea_checksum(const char *s)
 }
 
 /*
-  formated print of NMEA message, with checksum appended
+  formatted print of NMEA message, with checksum appended
  */
 void SITL_State::_gps_nmea_printf(const char *fmt, ...)
 {