diff --git a/docs/docs/installation/otp_en.md b/docs/docs/installation/otp_en.md
index 9de4e4824..6d91da01c 100644
--- a/docs/docs/installation/otp_en.md
+++ b/docs/docs/installation/otp_en.md
@@ -122,8 +122,12 @@ Restart PostgreSQL to apply configuration changes:
 adduser --system --shell  /bin/false --home /opt/akkoma akkoma
 
 # Set the flavour environment variable to the string you got in Detecting flavour section.
-# For example if the flavour is `amd64` the command will be
-export FLAVOUR="amd64"
+# For example if the flavour is `amd64-musl` the command will be
+#     export FLAVOUR="amd64-musl"
+export FLAVOUR="<replace-this-with-the-correct-flavour-string>"
+
+# Make sure the SHELL variable is set
+export SHELL="${SHELL:-/bin/sh}"
 
 # Clone the release build into a temporary directory and unpack it
 su akkoma -s $SHELL -lc "