diff --git a/Adafruit_GPS.cpp b/Adafruit_GPS.cpp
index 5a68d26..0e502d9 100755
--- a/Adafruit_GPS.cpp
+++ b/Adafruit_GPS.cpp
@@ -314,7 +314,13 @@ boolean Adafruit_GPS::waitForSentence(char *wait4me, uint8_t max) {
 boolean Adafruit_GPS::LOCUS_StartLogger(void) {
   sendCommand(PMTK_LOCUS_STARTLOG);
   recvdflag = false;
-  return waitForSentence(PMTK_LOCUS_LOGSTARTED);
+  return waitForSentence(PMTK_LOCUS_STARTSTOPACK);
+}
+
+boolean Adafruit_GPS::LOCUS_StopLogger(void) {
+  sendCommand(PMTK_LOCUS_STOPLOG);
+  recvdflag = false;
+  return waitForSentence(PMTK_LOCUS_STARTSTOPACK);
 }
 
 boolean Adafruit_GPS::LOCUS_ReadStatus(void) {
diff --git a/Adafruit_GPS.h b/Adafruit_GPS.h
index 0003f59..1dc0b15 100755
--- a/Adafruit_GPS.h
+++ b/Adafruit_GPS.h
@@ -50,7 +50,8 @@ All text above must be included in any redistribution
 // such as the awesome http://www.hhhh.org/wiml/proj/nmeaxor.html
 
 #define PMTK_LOCUS_STARTLOG  "$PMTK185,0*22"
-#define PMTK_LOCUS_LOGSTARTED "$PMTK001,185,3*3C"
+#define PMTK_LOCUS_STOPLOG "$PMTK185,1*23"
+#define PMTK_LOCUS_STARTSTOPACK "$PMTK001,185,3*3C"
 #define PMTK_LOCUS_QUERY_STATUS "$PMTK183*38"
 #define PMTK_LOCUS_ERASE_FLASH "$PMTK184,1*22"
 #define LOCUS_OVERLAP 0
@@ -121,6 +122,7 @@ class Adafruit_GPS {
 
   boolean waitForSentence(char *wait, uint8_t max = MAXWAITSENTENCE);
   boolean LOCUS_StartLogger(void);
+  boolean LOCUS_StopLogger(void);
   boolean LOCUS_ReadStatus(void);
 
   uint16_t LOCUS_serial, LOCUS_records;