diff --git a/src/shared/ethtool-link-mode.py b/src/shared/ethtool-link-mode.py
index 6d23f3c43a..c64fa6c456 100755
--- a/src/shared/ethtool-link-mode.py
+++ b/src/shared/ethtool-link-mode.py
@@ -7,7 +7,7 @@ import subprocess
 import sys
 
 OVERRIDES = {
-    'autoneg' : 'autonegotiation',
+    'autoneg': 'autonegotiation',
 }
 
 mode = sys.argv[1]