diff --git a/drivers/fet_core.c b/drivers/fet_core.c
index 41c6503..cc956d6 100644
--- a/drivers/fet_core.c
+++ b/drivers/fet_core.c
@@ -137,7 +137,7 @@ struct fet_device {
 
 static void show_dev_info(const char *name, const struct fet_device *dev)
 {
-	printc("Device: %s\n", name);
+	printc_dbg("Device: %s\n", name);
 	printc_dbg("Number of breakpoints: %d\n", dev->base.max_breakpoints);
 }
 
@@ -1037,7 +1037,7 @@ device_t fet_open(const struct device_args *args,
 
 	if (try_open(dev, args, fet_flags & FET_FORCE_RESET) < 0) {
 		delay_ms(500);
-		printc("Trying again...\n");
+		printc_dbg("Trying again...\n");
 		if (try_open(dev, args, !is_new_olimex(dev)) < 0)
 			goto fail;
 	}
diff --git a/transport/comport.c b/transport/comport.c
index 9e77b30..8ff30f9 100644
--- a/transport/comport.c
+++ b/transport/comport.c
@@ -125,7 +125,7 @@ transport_t comport_open(const char *device, int baud_rate)
 
 	tr->base.ops = &comport_transport;
 
-	printc("Trying to open %s at %d bps...\n", device, baud_rate);
+	printc_dbg("Trying to open %s at %d bps...\n", device, baud_rate);
 	tr->serial_fd = sport_open(device, baud_rate, 0);
 	if (SPORT_ISERR(tr->serial_fd)) {
 		printc_err("comport: can't open serial device: %s: %s\n",
diff --git a/transport/cp210x.c b/transport/cp210x.c
index 436e978..28ce70b 100644
--- a/transport/cp210x.c
+++ b/transport/cp210x.c
@@ -127,7 +127,7 @@ static int open_interface(struct cp210x_transport *tr,
 	char drName[256];
 #endif
 
-	printc(__FILE__": Trying to open interface %d on %s\n",
+	printc_dbg(__FILE__": Trying to open interface %d on %s\n",
 	       ino, dev->filename);
 
 	tr->int_number = ino;
diff --git a/transport/rf2500.c b/transport/rf2500.c
index 1ad804a..6da9bf5 100644
--- a/transport/rf2500.c
+++ b/transport/rf2500.c
@@ -58,7 +58,7 @@ struct rf2500_transport {
 static int open_interface(struct rf2500_transport *tr,
 			  struct usb_device *dev, int ino)
 {
-	printc("Trying to open interface %d on %s\n", ino, dev->filename);
+	printc_dbg("Trying to open interface %d on %s\n", ino, dev->filename);
 
 	tr->int_number = ino;