diff --git a/libraries/onos.robot b/libraries/onos.robot
index fdd2c26..1b26fce 100644
--- a/libraries/onos.robot
+++ b/libraries/onos.robot
@@ -103,7 +103,7 @@
     [Arguments]    ${ip}    ${port}    ${onu_port}
     [Documentation]    Verifies if the ONU port is enabled in ONOS
     ${onu_port_enabled}=    Execute ONOS CLI Command    ${ip}    ${port}
-    ...    ports -e | grep ${onu_port}
+    ...    ports -e | grep port=${onu_port}
     Log    ${onu_port_enabled}
     Should Not Be Empty    ${onu_port_enabled}