diff --git a/CHANGELOG.md b/CHANGELOG.md
index 221ac3f..4633848 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ Record of the modification in project development.
 - [Issue 6 : Remove loglevel dependency from the void-kaiten-yaki.sh ](https://github.com/suikan4github/kaiten-yaki/6)
 - [Issue 7 : Add the return status validation ](https://github.com/suikan4github/kaiten-yaki/7)
 - [Issue 11 : Make chroot'ed job independent script file ](https://github.com/suikan4github/kaiten-yaki/11)
+- [Issue 12 : change ERASEALL=0 as default ](https://github.com/suikan4github/kaiten-yaki/12)
 
 ### Deprecated
 ### Removed
diff --git a/script/config.sh b/script/config.sh
index 6f0f32f..70e20ee 100644
--- a/script/config.sh
+++ b/script/config.sh
@@ -8,7 +8,7 @@ export DEV="/dev/sda"
 # Whether you want to erase all contents of the storage device or not.
 # 1 : Yes, I want to erase all.
 # 0 : No, I don't. I want to add to the existing LUKS volume. 
-export ERASEALL=1
+export ERASEALL=0
 
 # Logical Volume name for your Linux installation. Keep it unique from other distribution.
 export LVROOTNAME="anko"