diff --git a/p4-16/psa/PSA.adoc b/p4-16/psa/PSA.adoc
index ecf663f172..c022ecf48b 100644
--- a/p4-16/psa/PSA.adoc
+++ b/p4-16/psa/PSA.adoc
@@ -17,6 +17,7 @@
 :stylesdir: resources/theme/
 :stylesheet: p4-stylesheet.css
 :source-highlighter: rouge
+:data-uri:
 
 [abstract]
 .Abstract
diff --git a/p4-16/spec/P4-16-spec.adoc b/p4-16/spec/P4-16-spec.adoc
index 2bf6a6fcb1..37940fb202 100644
--- a/p4-16/spec/P4-16-spec.adoc
+++ b/p4-16/spec/P4-16-spec.adoc
@@ -3,6 +3,7 @@
 :revdate: {docdate}
 :revnumber: v1.2.5
 :imagesdir: resources/figs
+:data-uri:
 :font-size: 10
 :sectnums: 5
 :sectnumlevels: 5