--- a/third_party/openthread/repo/src/cli/cli.cpp
+++ b/third_party/openthread/repo/src/cli/cli.cpp
@@ -1785,6 +1785,7 @@ template <> otError Interpreter::Process
 
     for (uint8_t i = 0;; i++)
     {
+    	OT_UNUSED_VARIABLE(i);
         SuccessOrExit(otThreadGetNextCacheEntry(GetInstancePtr(), &entry, &iterator));
         OutputEidCacheEntry(entry);
     }