diff --git a/omr-tracker/files/bin/omr-tracker b/omr-tracker/files/bin/omr-tracker
index c4672d996..0d14520e2 100755
--- a/omr-tracker/files/bin/omr-tracker
+++ b/omr-tracker/files/bin/omr-tracker
@@ -128,7 +128,7 @@ while true; do
 		if [ -z "$OMR_TRACKER_DEVICE_GATEWAY" ]; then
 			OMR_TRACKER_DEVICE_GATEWAY=$(ip -4 r list dev "$OMR_TRACKER_DEVICE" | grep -v default | awk '/proto static/ {print $1}' | tr -d "\n")
 		fi
-		if [ -s "$OMR_TRACKER_DEVICE_GATEWAY" ]; then
+		if [ -z "$OMR_TRACKER_DEVICE_GATEWAY" ]; then
 			OMR_TRACKER_DEVICE_GATEWAY=$(uci -q get "network.$OMR_TRACKER_INTERFACE.gateway")
 		fi
 		if [ -z "$OMR_TRACKER_DEVICE_GATEWAY" ]; then