diff --git a/scst/src/dev_handlers/scst_vdisk.c b/scst/src/dev_handlers/scst_vdisk.c
index 6a32a3189..bf0a8fc5e 100644
--- a/scst/src/dev_handlers/scst_vdisk.c
+++ b/scst/src/dev_handlers/scst_vdisk.c
@@ -8133,7 +8133,7 @@ static int vdev_parse_add_dev_params(struct scst_vdisk_dev *virt_dev,
 		} else if (!strcasecmp("blocksize", p)) {
 			virt_dev->blk_shift = scst_calc_block_shift(val);
 			if (virt_dev->blk_shift < 9) {
-				PRINT_ERROR("blocksize %u too small", 1<<virt_dev->blk_shift);
+				PRINT_ERROR("blocksize %llu too small", val);
 				res = -EINVAL;
 				goto out;
 			}
@@ -10377,7 +10377,8 @@ static int vdisk_write_proc(char *buffer, char **start, off_t offset,
 
 			block_shift = scst_calc_block_shift(block_size);
 			if (block_shift < 9) {
-				PRINT_ERROR("blocksize %u too small", 1<<block_shift);
+				PRINT_ERROR("blocksize %u too small",
+					    block_size);
 				res = -EINVAL;
 				goto out_free_vdev;
 			}