diff --git a/auto_start/auto_start_anchor.sh b/auto_start/auto_start_anchor.sh
index 12419bd..9eebc57 100755
--- a/auto_start/auto_start_anchor.sh
+++ b/auto_start/auto_start_anchor.sh
@@ -15,7 +15,11 @@ echo "[INFO] Network interface is up!"
 echo "[INFO] Starting ROS node..."
 
 # Source ROS 2 Humble setup script
-source /opt/ros/humble/setup.bash
+if command -v nixos-rebuild; then
+    echo "[INFO] running on NixOS"
+else
+    source /opt/ros/humble/setup.bash
+fi
 
 # Source your workspace setup script
 source $SCRIPT_DIR/../install/setup.bash
diff --git a/auto_start/auto_start_headless_full.sh b/auto_start/auto_start_headless_full.sh
index 8a014e1..8fb6e25 100755
--- a/auto_start/auto_start_headless_full.sh
+++ b/auto_start/auto_start_headless_full.sh
@@ -15,7 +15,11 @@ echo "[INFO] Network interface is up!"
 echo "[INFO] Starting ROS node..."
 
 # Source ROS 2 Humble setup script
-source /opt/ros/humble/setup.bash
+if command -v nixos-rebuild; then
+    echo "[INFO] running on NixOS"
+else
+    source /opt/ros/humble/setup.bash
+fi
 
 # Source your workspace setup script
 source $SCRIPT_DIR/../install/setup.bash
diff --git a/auto_start/start_rosbag.sh b/auto_start/start_rosbag.sh
index dcc07d7..ac00fa0 100755
--- a/auto_start/start_rosbag.sh
+++ b/auto_start/start_rosbag.sh
@@ -17,7 +17,11 @@ done
 echo "[INFO] Network interface is up!"
 
 
-source /opt/ros/humble/setup.bash
+if command -v nixos-rebuild; then
+    echo "[INFO] running on NixOS"
+else
+    source /opt/ros/humble/setup.bash
+fi
 source $ANCHOR_WS/install/setup.bash
 [[ -f $AUTONOMY_WS/install/setup.bash ]] && source $AUTONOMY_WS/install/setup.bash