diff --git a/overlay/opt/emcomm-tools/bin/et-th-d74 b/overlay/opt/emcomm-tools/bin/et-th-d74
index 034db0c..d868d9f 100755
--- a/overlay/opt/emcomm-tools/bin/et-th-d74
+++ b/overlay/opt/emcomm-tools/bin/et-th-d74
@@ -148,7 +148,7 @@ case $1 in
   p|pair)
 
     MAC=$(cat ${ACTIVE_RADIO} | jq -e -r .bluetooth.mac)
-    if [ $? -eq 0 ]; then
+    if [[ "{$MAC}" != "" ]]; then
       PAIR_STATUS=$(bluetoothctl info "${MAC}" | grep "Paired:" | awk '{print $2}')
       if [ "${PAIR_STATUS}" == "yes" ]; then
          echo "Device with MAC ${MAC} is already paired."