diff --git a/doc/PRODUCTION.md b/doc/PRODUCTION.md
index d684d28..ebec76a 100644
--- a/doc/PRODUCTION.md
+++ b/doc/PRODUCTION.md
@@ -30,7 +30,7 @@ sudo snap install core
 sudo snap refresh core
 
 # https://certbot.eff.org/lets-encrypt/debianbuster-nginx
-# Cerbot
+# Certbot
 sudo snap install --classic certbot
 sudo ln -s /snap/bin/certbot /usr/bin/certbot
 ```
diff --git a/script/install/install_debian_10_prod_docker.sh b/script/install/install_debian_10_prod_docker.sh
index f970e98..51a8e3d 100755
--- a/script/install/install_debian_10_prod_docker.sh
+++ b/script/install/install_debian_10_prod_docker.sh
@@ -14,6 +14,6 @@ sudo snap install core
 sudo snap refresh core
 
 # https://certbot.eff.org/lets-encrypt/debianbuster-nginx
-# Cerbot
+# Certbot
 sudo snap install --classic certbot
 sudo ln -s /snap/bin/certbot /usr/bin/certbot
diff --git a/script/install/install_ubuntu_docker.sh b/script/install/install_ubuntu_docker.sh
index 8f00f56..89992f2 100755
--- a/script/install/install_ubuntu_docker.sh
+++ b/script/install/install_ubuntu_docker.sh
@@ -14,6 +14,6 @@ sudo snap install core
 sudo snap refresh core
 
 # https://certbot.eff.org/lets-encrypt/debianbuster-nginx
-# Cerbot
+# Certbot
 sudo snap install --classic certbot
 sudo ln -s /snap/bin/certbot /usr/bin/certbot