diff --git a/jlink_spi.c b/jlink_spi.c
index 3a73c01..f2702fa 100644
--- a/jlink_spi.c
+++ b/jlink_spi.c
@@ -134,7 +134,7 @@
 	ret = jaylink_jtag_io(jaylink_devh, buffer, buffer, buffer, length * 8, JAYLINK_JTAG_VERSION_2);
 
 	if (ret != JAYLINK_OK) {
-		msg_perr("jaylink_jag_io() failed: %s.\n", jaylink_strerror(ret));
+		msg_perr("jaylink_jtag_io() failed: %s.\n", jaylink_strerror(ret));
 		free(buffer);
 		return SPI_PROGRAMMER_ERROR;
 	}
@@ -212,7 +212,7 @@
 
 	if (arg) {
 		if (!strlen(arg)) {
-			msg_perr("Emptpy serial number specified.\n");
+			msg_perr("Empty serial number specified.\n");
 			free(arg);
 			return 1;
 		}
@@ -268,7 +268,7 @@
 	ret = jaylink_discovery_scan(jaylink_ctx, 0);
 
 	if (ret != JAYLINK_OK) {
-		msg_perr("jaylink_discover_scan() failed: %s.\n", jaylink_strerror(ret));
+		msg_perr("jaylink_discovery_scan() failed: %s.\n", jaylink_strerror(ret));
 		return 1;
 	}
 
@@ -363,7 +363,7 @@
 		ret = jaylink_get_extended_caps(jaylink_devh, caps);
 
 		if (ret != JAYLINK_OK) {
-			msg_perr("jaylink_get_available_interfaces() failed: %s.\n", jaylink_strerror(ret));
+			msg_perr("jaylink_get_extended_caps() failed: %s.\n", jaylink_strerror(ret));
 			return 1;
 		}
 	}