diff --git a/pdf.c b/pdf.c
index 02168bf10ac8371cd3ab1eddb736d23338fc98ea..bc02cd4ef90222ea4d891f8a2e547fe409327926 100644
--- a/pdf.c
+++ b/pdf.c
@@ -1,4 +1,6 @@
-/* beginnings of a PDF parser in hammer */
+/* beginnings of a PDF parser in hammer
+ * pesco 2019
+ */
 
 #include <string.h>	/* strncmp() */