diff --git a/ipynb/Advent 2017.ipynb b/ipynb/Advent 2017.ipynb
index 1b84775..1197420 100644
--- a/ipynb/Advent 2017.ipynb	
+++ b/ipynb/Advent 2017.ipynb	
@@ -6,7 +6,7 @@
    "source": [
     "# December 2017: Advent of Code Solutions\n",
     "\n",
-    "<div align=right>Peter Norvig, December 2017</div>\n",
+    "Peter Norvig\n",
     "\n",
     "I'm doing the [Advent of Code](https://adventofcode.com) puzzles, just like [last year](https://github.com/norvig/pytudes/blob/master/ipynb/Advent%20of%20Code.ipynb). But this time, I won't write up my interpretation of each day's the puzzle description; you'll have to follow the links in the section headers (e.g. **[Day 1](https://adventofcode.com/2017/day/1)**) to read those. I just show my solutions.\n",
     "\n",