diff --git a/f3probe.c b/f3probe.c
index be8584b..a6baba3 100644
--- a/f3probe.c
+++ b/f3probe.c
@@ -405,7 +405,7 @@ static int test_device(struct args *args)
 	assert(!gettimeofday(&t2, NULL));
 
 	if (!args->debug && args->reset_type == RT_MANUAL_USB) {
-		printf("CAUTION\tCAUTION\tCAUTION\n");
+		printf("CAUTION\t\tCAUTION\t\tCAUTION\n");
 		printf("No more resets are needed, so do not unplug the drive\n");
 		fflush(stdout);
 	}
diff --git a/libdevs.c b/libdevs.c
index 9500d03..157f1cd 100644
--- a/libdevs.c
+++ b/libdevs.c
@@ -602,7 +602,8 @@ struct device *create_block_device(const char *filename, int block_order,
 		assert(disk_dev);
 		s = udev_device_get_devnode(disk_dev);
 		fprintf(stderr, "Device `%s' is a partition of disk device `%s'.\n"
-			"You can run this program as follows:\nf3probe %s\n",
+			"You must run f3probe on the disk device as follows:\n"
+			"f3probe %s\n",
 			filename, s, s);
 		udev_device_unref(disk_dev);
 		goto fd_dev;