diff --git a/tools/net/ynl/pyynl/ethtool.py b/tools/net/ynl/pyynl/ethtool.py
index cab6b576c876..87bb56108005 100755
--- a/tools/net/ynl/pyynl/ethtool.py
+++ b/tools/net/ynl/pyynl/ethtool.py
@@ -45,6 +45,9 @@ def print_field(reply, *desc):
     Pretty-print a set of fields from the reply. desc specifies the
     fields and the optional type (bool/yn).
     """
+    if not reply:
+        return
+
     if len(desc) == 0:
         return print_field(reply, *zip(reply.keys(), reply.keys()))