diff --git a/ioctl.h b/ioctl.h
index 402317f4..9627e8d1 100644
--- a/ioctl.h
+++ b/ioctl.h
@@ -480,9 +480,9 @@ static inline char *btrfs_err_str(enum btrfs_err_code err_code)
 		case BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET:
 			return "unable to go below four devices on raid10";
 		case BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET:
-			return "unable to go below three devices on raid5";
+			return "unable to go below two devices on raid5";
 		case BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET:
-			return "unable to go below four devices on raid6";
+			return "unable to go below three devices on raid6";
 		case BTRFS_ERROR_DEV_TGT_REPLACE:
 			return "unable to remove the dev_replace target dev";
 		case BTRFS_ERROR_DEV_MISSING_NOT_FOUND: