diff --git a/libraries/AP_GPS/AP_GPS_NMEA.cpp b/libraries/AP_GPS/AP_GPS_NMEA.cpp
index 8bf6778a49..c563cd2e54 100644
--- a/libraries/AP_GPS/AP_GPS_NMEA.cpp
+++ b/libraries/AP_GPS/AP_GPS_NMEA.cpp
@@ -148,6 +148,7 @@ bool AP_GPS_NMEA::_decode(char c)
     switch (c) {
     case ',': // term terminators
         _parity ^= c;
+        /* no break */
     case '\r':
     case '\n':
     case '*':