diff --git a/inc/config.h b/inc/config.h
--- a/inc/config.h
+++ b/inc/config.h
@@ -68,7 +68,7 @@
 #define GPS_BAUDRATE 9600
 
 // NMEA circular buffer size. Must be large enough to hold all received sentences
-#define NMEABUFFER_SIZE 150
+#define NMEABUFFER_SIZE 25