diff --git a/pdf.c b/pdf.c
index e811113a13fea9477ead5eb15bfff3d4b1225f61..bc4321ae4d3eb8dbe7bb71aa2af36f98684dbe60 100644
--- a/pdf.c
+++ b/pdf.c
@@ -68,8 +68,7 @@ bytes_eq(HBytes b, const char *s)
 	return strncmp(s, (const char *)(b.token), b.len) == 0 && b.len == strlen(s);
 }
 
-/* This probably belongs next to Ref and XREntry,
- * but dictentry() needs to know about this type */
+// XXX This probably belongs next to Ref and XREntry, but dictentry() needs it
 typedef HCountedArray Dict;
 
 /* a helper to look up a value in a dictionary */
@@ -173,9 +172,7 @@ pp_parseresult(FILE *stream, const HParsedToken *tok, int indent, int delta)
 	h_pprint(stream, res->ast, indent, delta);
 }
 
-/* Can the default behavior be overriden to only print the V: field? */
-/* Warning: boolean keywords get printed as (null),
- *  since the LIT() macro parses them with h_ignore() */
+// XXX booleans get printed as (null), since LIT() parses them with h_ignore()
 void
 pp_dict(FILE *stream, const HParsedToken *tok, int indent, int delta)
 {