diff --git a/presentations/20min-violation-intro/violation-intro.md b/presentations/20min-violation-intro/violation-intro.md
index c1816bc3f8fd056174208b4cd75c3aff7c3bb286..6566c90896260f00f601c28e77b358f4b4ab2782 100644
--- a/presentations/20min-violation-intro/violation-intro.md
+++ b/presentations/20min-violation-intro/violation-intro.md
@@ -1,6 +1,6 @@
 % The What and How of GPL Violations
 % Bradley M. Kuhn
-% Tuesday 8 May 2017
+% Tuesday 9 May 2017
 
 # What's a GPL Violation?