diff --git a/CHANGELOG.md b/CHANGELOG.md
index 720fbbe..1d52570 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,15 +9,6 @@ Record of the modification in project development.
 ### Fixed
 ### Known Issue
 
-## [1.3.1] - 2023-04-15
-### Added
-### Changed
-### Deprecated
-### Removed
-### Fixed
-- [Issue 43 : Partition names should be prefixed by "p" for NVMe](https://github.com/suikan4github/kaiten-yaki/pull/43). Thank you Uraza for your contribution. 
-### Known Issue
-
 ## [1.3.0] - 2022-05-15
 ### Added
 - [Issue 31 : Add extra partition functionality.](https://github.com/suikan4github/kaiten-yaki/issues/31)
@@ -105,7 +96,6 @@ See [Testing before release v1.1.0](https://github.com/suikan4github/kaiten-yaki
 
 
 [Unreleased]: https://github.com/suikan4github/kaiten-yaki/compare/v1.3.0...develop
-[1.3.1]: https://github.com/suikan4github/kaiten-yaki/compare/v1.3.0...v1.3.1
 [1.3.0]: https://github.com/suikan4github/kaiten-yaki/compare/v1.2.0...v1.3.0
 [1.2.0]: https://github.com/suikan4github/kaiten-yaki/compare/v1.1.0...v1.2.0
 [1.1.0]: https://github.com/suikan4github/kaiten-yaki/compare/v1.0.0...v1.1.0
diff --git a/script/config.sh b/script/config.sh
index b73ab5b..4ed7602 100644
--- a/script/config.sh
+++ b/script/config.sh
@@ -87,20 +87,12 @@ else
 export ISEFI=0  # No, BIOS
 fi # is EFI firmaare? 
 
-# Detect drive type.
-# For NVME drives, partition names should be prefixed by p.
-if [[ ${DEV} == *"nvme"* ]] ; then
-export PARTPREFIX="p"  # Yes, NVME
-else
-export PARTPREFIX=""   # No, regular
-fi
-
 # Set partition number based on the firmware type
 if [  ${ISEFI} -ne 0  ] ; then 
 # EFI firmware
-export EFIPARTITION=${PARTPREFIX}1
-export CRYPTPARTITION=${PARTPREFIX}2
+export EFIPARTITION=1
+export CRYPTPARTITION=2
 else
 # BIOS firmware
-export CRYPTPARTITION=${PARTPREFIX}1
+export CRYPTPARTITION=1
 fi  # EFI firmware