diff --git a/README.md b/README.md
index c6dbbd5..c001df8 100644
--- a/README.md
+++ b/README.md
@@ -59,6 +59,7 @@ These files provide a bash script for quickly deploying multiple octoprint insta
   * Change udev rules for an instance with `sudo octoprint_deploy/octoprint_deploy.sh replace`
   * Always a good idea to update octoprint_deploy from time-to-time with `git -C octoprint_deploy pull`
 # Recent Changes
+* Add 'noserial' command line option. Currently for cameras only, this will unset the serial number in cases where cameras are known to share a serial number.
 * Add detection for ch34x driver. This is used by Weedo printers and must be compiled separately.
 * Utility sub-menu for less used options.
 * Share Uploads option which will set the same upload directory for all instances.
diff --git a/octoprint_deploy.sh b/octoprint_deploy.sh
index f8c990c..76cbe7f 100755
--- a/octoprint_deploy.sh
+++ b/octoprint_deploy.sh
@@ -390,7 +390,7 @@ add_camera() {
     if [ -z "$PI" ]; then
         detect_camera
         if [ -n "$NOSERIAL" ]; then
-            unset $CAM
+            unset CAM
         fi
         #Failed state. Nothing detected
         if [ -z "$CAM" ] && [ -z "$TEMPUSBCAM" ] ; then