diff --git a/core/api/src/test/java/org/onosproject/net/optical/impl/DefaultOmsPortTest.java b/core/api/src/test/java/org/onosproject/net/optical/impl/DefaultOmsPortTest.java
index 4f32afc..a09d5ec 100644
--- a/core/api/src/test/java/org/onosproject/net/optical/impl/DefaultOmsPortTest.java
+++ b/core/api/src/test/java/org/onosproject/net/optical/impl/DefaultOmsPortTest.java
@@ -115,7 +115,7 @@
         assertThat(oms.maxFrequency(), is(maxFrequency));
         assertThat(oms.minFrequency(), is(minFrequency));
         assertThat(oms.grid(), is(grid));
-        assertThat("(33-3)/2 = 15", oms.totalChannels(), is((short) 15));
+        assertThat("((33-3)/2)+1 = 16", oms.totalChannels(), is((short) 16));
     }
 
 }