diff --git a/README.md b/README.md
index ef8a0ba..740de17 100644
--- a/README.md
+++ b/README.md
@@ -221,7 +221,7 @@ Nothing requires the puzzle to have 7 available letters. If we only provide 6
 letters, we get fewer valid puzzles, but it takes less time to compute them.
 
 | # letters | time | # puzzles| 
-------------------------------
+|---|---|---|
 | 3 | 20s | 0 |
 | 4 | 2m20s | 189 |
 | 5 | 10m29s | 6139 |