diff --git a/print.c b/print.c
index c4b1e6a..00af86f 100644
--- a/print.c
+++ b/print.c
@@ -26,6 +26,11 @@
 static int verbose = 1;
 static int print_level = LOG_INFO;
 
+void print_set_level(int level)
+{
+	print_level = level;
+}
+
 void print(int level, char const *format, ...)
 {
 	pid_t pid;
diff --git a/print.h b/print.h
index 6c16315..eeb868e 100644
--- a/print.h
+++ b/print.h
@@ -24,6 +24,8 @@
 
 void print(int level, char const *format, ...);
 
+void print_set_level(int level);
+
 #define pr_emerg(x...)   print(LOG_EMERG, x)
 #define pr_alert(x...)   print(LOG_ALERT, x)
 #define pr_crit(x...)    print(LOG_CRIT, x)
diff --git a/ptp4l.c b/ptp4l.c
index a54dee8..c75e8ce 100644
--- a/ptp4l.c
+++ b/ptp4l.c
@@ -63,6 +63,7 @@ static void usage(char *progname)
 		" -h        prints this message and exits\n"
 		" -i [dev]  interface device to use, for example 'eth0'\n"
 		"           (may be specified multiple times)\n"
+		" -l [num]  set the logging level to 'num'\n"
 		" -m        slave only mode\n"
 		" -p [dev]  PTP hardware clock device to use, default '%s'\n"
 		"           (ignored for SOFTWARE/LEGACY HW time stamping)\n\n",
@@ -81,7 +82,7 @@ int main(int argc, char *argv[])
 	/* Process the command line arguments. */
 	progname = strrchr(argv[0], '/');
 	progname = progname ? 1+progname : argv[0];
-	while (EOF != (c = getopt(argc, argv, "246hi:mp:rsz"))) {
+	while (EOF != (c = getopt(argc, argv, "246hi:l:mp:rsz"))) {
 		switch (c) {
 		case '2':
 			transport = TRANS_IEEE_802_3;
@@ -100,6 +101,9 @@ int main(int argc, char *argv[])
 				return -1;
 			}
 			break;
+		case 'l':
+			print_set_level(atoi(optarg));
+			break;
 		case 'm':
 			slaveonly = 1;
 			break;