diff --git a/python/ray/tune/ParallelCoordinatesVisualization.ipynb b/python/ray/tune/ParallelCoordinatesVisualization.ipynb
index ab6254969..89b57606c 100644
--- a/python/ray/tune/ParallelCoordinatesVisualization.ipynb
+++ b/python/ray/tune/ParallelCoordinatesVisualization.ipynb
@@ -75,6 +75,7 @@
     "               'episode_reward_mean']\n",
     "\n",
     "visualization_df = df[GOOD_FIELDS]\n",
+    "visualization_df = visualization_df.dropna()\n",
     "visualization_df"
    ]
   },