diff --git a/.memory/project.md b/.memory/project.md
index 3372cf2..1d5489e 100644
--- a/.memory/project.md
+++ b/.memory/project.md
@@ -8,6 +8,7 @@
 - Sample config is stored in `sample-config/` and mirrors current script behavior.
 - Documentation language: English.
 - Current task focus: keep README and memory aligned with the working script and sample configuration.
+- Sample host files currently use numbered names: `01_prod.yaml`, `02_staging.yaml`, `03_dev.yaml`.
 - Known follow-up improvements:
 	- Group naming should avoid duplicating the file name and the YAML value.
 	- Each group should have default values.
diff --git a/README.md b/README.md
index a3620f8..84f11d1 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,8 @@ A Bash SSH target picker built around `fzf` and YAML configuration.
 ## What it does
 
 - Lists SSH targets from grouped YAML files
+- Uses the `group` value from each YAML file as the displayed group name
+- Allows the YAML file name to differ from the group name
 - Supports global defaults for user, port, and jump hosts
 - Supports per-host overrides
 - Can also browse entries from `~/.ssh/known_hosts`
@@ -49,10 +51,10 @@ ssh:
 
 ```
 
-### `hosts/dev.yaml`
+### `hosts/01_prod.yaml`
 
 ```yaml
-group: dev
+group: prod
 servers:
   - name: api-1
     aliases:
@@ -71,10 +73,10 @@ servers:
     port: 22
 ```
 
-### `hosts/prod.yaml`
+### `hosts/03_dev.yaml`
 
 ```yaml
-group: prod
+group: dev
 servers:
   - name: web-1
     aliases:
@@ -84,6 +86,10 @@ servers:
     jump_host: office
 ```
 
+The file name does not need to match the `group` value. The script reads the `group` from the YAML content and uses the file path internally to load the selected host.
+
+The sample configuration now uses numbered file names such as `01_prod.yaml`, `02_staging.yaml`, and `03_dev.yaml`.
+
 Each host entry can define:
 
 - `name`
@@ -104,6 +110,8 @@ A complete sample configuration is available in `sample-config/`.
 - If a host does not define a user or port, global defaults are used.
 - `default_options` is present in the config but not consumed by the current script.
 - The sample config includes `ssh_options` in one file, but the current script does not consume it yet.
+- Sample host examples are stored as `sample-config/hosts/01_prod.yaml`, `02_staging.yaml`, and `03_dev.yaml`.
+- The `group` key is required for each host config file; the file name is only an internal storage detail.
 - When `-k` is used, entries from `known_hosts` are shown with the selected user or `root` by default.
 - `known_hosts` entries use port `22`.
 - The script uses strict Bash mode (`set -euo pipefail`).
diff --git a/mtm-ssh-menu b/mtm-ssh-menu
index bf44cc0..ad3b348 100755
--- a/mtm-ssh-menu
+++ b/mtm-ssh-menu
@@ -94,12 +94,13 @@ load_config() {
 	for file in "$HOSTS_DIR"/*.yaml; do
 		local FILE_CONTENT GROUP_NAME GROUP_SERVERS INDEX
 		FILE_CONTENT="$(<"$file")"
-		GROUP_NAME=$(basename "$file")
-		GROUP_NAME=${GROUP_NAME%.*}
-		GROUP_NAME=$(yq -r '.group // "'"$GROUP_NAME"'"' <<<"$FILE_CONTENT")
+		GROUP_NAME=$(yq -r '.group // empty' <<<"$FILE_CONTENT")
+		if [ "$GROUP_NAME" = "" ]; then
+			printf 'Error: missing group name in config file: %s\n' "$file" >&2
+			exit 1
+		fi
 		GROUP_SERVERS=$(yq -r '.servers // []' <<<"$FILE_CONTENT")
 		INDEX=0
-		
 		for ((i=0; i<$(jq -r '. | length' <<<"$GROUP_SERVERS"); i++)); do
 			local SSH_SERVER_NAME SSH_SERVER_ALIASES ALIASES SSH_SERVER_HOST SSH_SERVER_PORT SSH_SERVER_USER
 			SSH_SERVER_NAME=$(jq -r '.'"[$i]"'.name // ""' <<<"$GROUP_SERVERS")
@@ -115,10 +116,9 @@ load_config() {
 			if [ "$SERVERS" != "" ]; then
 				SERVERS+="\n"
 			fi
-			SERVERS+="${GROUP_NAME} | ${INDEX} | ${SSH_SERVER_HOST} | ${SSH_SERVER_NAME} ${ALIASES} | ${SSH_SERVER_USER} | ${SSH_SERVER_PORT}"
+			SERVERS+="${GROUP_NAME} | ${file} | ${INDEX} | ${SSH_SERVER_HOST} | ${SSH_SERVER_NAME} ${ALIASES} | ${SSH_SERVER_USER} | ${SSH_SERVER_PORT}"
 			INDEX=$((INDEX+1))
 		done
-
 	done
 	shopt -u nullglob
 }
@@ -130,21 +130,22 @@ load_known_hosts() {
 		if [ "$SERVERS" != "" ]; then
 			SERVERS+="\n"
 		fi
-		SERVERS+="${GROUP_NAME} | ${host} | ${host} | ${host} | ${USE_KNOWN_HOSTS_USER} | 22"
+		SERVERS+="${GROUP_NAME} | known_hosts | ${host} | ${host} | ${USE_KNOWN_HOSTS_USER} | 22"
 	done
 }
 popup_menu() {
 	local SERVER
-	SERVER=$(echo -e "${SERVERS}" | column -t -s "|" -o "|" | fzf -e --layout=reverse --with-nth=1,3,4,5,6 --delimiter="|")
-	local GROUP_NAME HOST_INDEX
+	SERVER=$(echo -e "${SERVERS}" | column -t -s "|" -o "|" | fzf -e --layout=reverse --with-nth=1,4,5,6,7 --delimiter="|")
+	local GROUP_NAME GROUP_SOURCE HOST_INDEX
 	GROUP_NAME=$(echo "$SERVER" | awk -F '|' '{print $1}' | xargs)
-	HOST_INDEX=$(echo "$SERVER" | awk -F '|' '{print $2}' | xargs)
-	ssh_connect "$GROUP_NAME" "$HOST_INDEX"
+	GROUP_SOURCE=$(echo "$SERVER" | awk -F '|' '{print $2}' | xargs)
+	HOST_INDEX=$(echo "$SERVER" | awk -F '|' '{print $3}' | xargs)
+	ssh_connect "$GROUP_SOURCE" "$HOST_INDEX"
 }
 ssh_connect() {
 	if [[ "$HOST_INDEX" != *"."* ]]; then
 		local SERVER SSH_SERVER_USER SSH_SERVER_HOST SSH_SERVER_PORT SSH_SERVER_OPTIONS SSH_JUMP_HOST
-		SERVER=$(cat "$HOSTS_DIR/$1.yaml" | yq -r '.servers'"[$2]")
+		SERVER=$(yq -r '.servers['"$2"']' "$1")
 		SSH_SERVER_USER=$(jq -r '.user // "'"$DEFAULT_SSH_USER"'"' <<<"$SERVER")
 		SSH_SERVER_HOST=$(jq -r '.host // ""' <<<"$SERVER")
 		SSH_SERVER_PORT=$(jq -r '.port // "'"$DEFAULT_SSH_PORT"'"' <<<"$SERVER")
diff --git a/sample-config/hosts/prod.yaml b/sample-config/hosts/01_prod.yaml
similarity index 100%
rename from sample-config/hosts/prod.yaml
rename to sample-config/hosts/01_prod.yaml
diff --git a/sample-config/hosts/staging.yaml b/sample-config/hosts/02_staging.yaml
similarity index 100%
rename from sample-config/hosts/staging.yaml
rename to sample-config/hosts/02_staging.yaml
diff --git a/sample-config/hosts/dev.yaml b/sample-config/hosts/03_dev.yaml
similarity index 100%
rename from sample-config/hosts/dev.yaml
rename to sample-config/hosts/03_dev.yaml