diff --git a/tools/usb_camera.sh b/tools/usb_camera.sh
index 5119103..5e8e652 100755
--- a/tools/usb_camera.sh
+++ b/tools/usb_camera.sh
@@ -3,6 +3,8 @@
 SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
 cd "$SCRIPT_DIR/.."
 
+CAMERA_PATH=( $(echo /dev/v4l/by-id/usb-*-video-index0) )
+
 set -xeo pipefail
 make -j$(nproc)
-$GDB ./camera-streamer -camera-path=$(echo /dev/v4l/by-id/usb-*-video-index0) "$@"
+$GDB ./camera-streamer -camera-path="${CAMERA_PATH[${CAMERA_INDEX:-0}]}" "$@"