diff --git a/config.c b/config.c
index 5dcf7ca7..d0bc32ca 100644
--- a/config.c
+++ b/config.c
@@ -373,6 +373,7 @@ struct config_item config_tab[] = {
 	PORT_ITEM_INT("ts2phc.holdover", 0, 0, INT_MAX),
 	PORT_ITEM_INT("ts2phc.master", 0, 0, 1),
 	PORT_ITEM_INT("ts2phc.nmea_baudrate", 9600, 300, INT_MAX),
+	PORT_ITEM_INT("ts2phc.nmea_delay", 0, INT_MIN, INT_MAX),
 	GLOB_ITEM_STR("ts2phc.nmea_remote_host", ""),
 	GLOB_ITEM_STR("ts2phc.nmea_remote_port", ""),
 	GLOB_ITEM_STR("ts2phc.nmea_serialport", "/dev/ttyS0"),
diff --git a/ts2phc.8 b/ts2phc.8
index 8b5bd8be..0ee0022b 100644
--- a/ts2phc.8
+++ b/ts2phc.8
@@ -170,16 +170,6 @@ with the log level of the message as a number.  The default is an empty string
 (which cannot be set in the configuration file as the option requires an
 argument).
 
-.TP
-.B ts2phc.holdover
-The holdover interval, specified in seconds. When the ToD information stops
-working (e.g. GNSS receiver lost its fix), ts2phc is allowed for the specified
-interval to continue synchronizing the target clock as long as the servo is in
-the SERVO_LOCKED_STABLE state. The servo state needs be enabled by the
-\fBservo_num_offset_values\fP option. The holdover is not supported with the
-\fB-a\fP option and when \fBts2phc.extts_polarity\fP is set to \fIboth\fP.
-The default is 0 (disabled).
-
 .TP
 .B sa_file
 Specifies the location of the file containing Security Associations used
@@ -204,6 +194,26 @@ for all messages in accordance to the corresponding security association
 sourced via the \fBsa_file\fR directive. Not compatible with one step ports.
 Must be in the range of -1 to 255, inclusive. The default is -1 (disabled).
 
+.TP
+.B ts2phc.holdover
+The holdover interval, specified in seconds. When the ToD information stops
+working (e.g. GNSS receiver lost its fix), ts2phc is allowed for the specified
+interval to continue synchronizing the target clock as long as the servo is in
+the SERVO_LOCKED_STABLE state. The servo state needs be enabled by the
+\fBservo_num_offset_values\fP option. The holdover is not supported with the
+\fB-a\fP option and when \fBts2phc.extts_polarity\fP is set to \fIboth\fP.
+The default is 0 (disabled).
+
+.TP
+.B ts2phc.nmea_delay
+Specifies the minimum expected delay of NMEA RMC messages in nanoseconds.
+If the maximum delay is longer than 1 second, or 'ts2phc.pulsewidth'
+if 'ts2phc.extts_polarity' is set to "both", this option needs to be set
+accordingly to allow the timestamps from NMEA messages to be correctly
+assigned to pulses from the PPS signal and wrong PPS edges to be rejected if
+the edge rejection is enabled.
+The default is 0 nanoseconds.
+
 .TP
 .B ts2phc.nmea_remote_host, ts2phc.nmea_remote_port
 Specifies the remote host providing ToD information when using the
diff --git a/ts2phc_nmea_pps_source.c b/ts2phc_nmea_pps_source.c
index 7a284335..3385e393 100644
--- a/ts2phc_nmea_pps_source.c
+++ b/ts2phc_nmea_pps_source.c
@@ -33,6 +33,7 @@ struct ts2phc_nmea_pps_source {
 	pthread_t worker;
 	/* Protects anonymous struct fields, below, from concurrent access. */
 	pthread_mutex_t mutex;
+	tmv_t delay_correction;
 	struct {
 		struct timespec local_monotime;
 		struct timespec local_utctime;
@@ -187,6 +188,7 @@ static int ts2phc_nmea_pps_source_getppstime(struct ts2phc_pps_source *src,
 		return -1;
 	}
 	rmc = tmv_add(rmc, duration_since_rmc);
+	rmc = tmv_add(rmc, m->delay_correction);
 	utc_time = tmv_to_nanoseconds(rmc);
 	utc_time /= (int64_t) 1000000000;
 	*ts = tmv_to_timespec(rmc);
@@ -232,6 +234,8 @@ struct ts2phc_pps_source *ts2phc_nmea_pps_source_create(struct ts2phc_private *p
 	s->pps_source.destroy = ts2phc_nmea_pps_source_destroy;
 	s->pps_source.getppstime = ts2phc_nmea_pps_source_getppstime;
 	s->config = priv->cfg;
+	s->delay_correction = nanoseconds_to_tmv(
+			 config_get_int(priv->cfg, NULL, "ts2phc.nmea_delay"));
 	pthread_mutex_init(&s->mutex, NULL);
 	err = pthread_create(&s->worker, NULL, monitor_nmea_status, s);
 	if (err) {