diff --git a/setup/so-functions b/setup/so-functions
index 88da7ee9e..17bc8495e 100755
--- a/setup/so-functions
+++ b/setup/so-functions
@@ -729,7 +729,7 @@ configure_network_sensor() {
 	fi
 
 	# Create the bond interface only if it doesn't already exist
-	nmcli -f name,uuid -p con | grep -q '$INTERFACE'
+	nmcli -f name,uuid -p con | grep -q "$INTERFACE"
 	local found_int=$?
 
 	if [[ $found_int != 0 ]]; then