diff --git a/guide/self-hosted/docker.mdx b/guide/self-hosted/docker.mdx
index 5fa9a632..75c28e9a 100644
--- a/guide/self-hosted/docker.mdx
+++ b/guide/self-hosted/docker.mdx
@@ -27,7 +27,8 @@ git clone https://github.com/getlago/lago.git
 cd lago
 
 # Set up environment configuration
-echo "LAGO_RSA_PRIVATE_KEY=\"`openssl genrsa 2048 | base64`\"" >> .env
+echo "LAGO_RSA_PRIVATE_KEY=\"`openssl genrsa 2048 | base64 | tr -d '\n'`\"" >> .env
+
 source .env
 
 # Start the api