diff --git a/html/inc/bossa_example.inc b/html/inc/bossa_example.inc
index a53df9b3d3..5740a7dc25 100644
--- a/html/inc/bossa_example.inc
+++ b/html/inc/bossa_example.inc
@@ -73,4 +73,8 @@ function instance_summary($inst) {
     }
 }
 
+function user_summary($user) {
+    return "";
+}
+
 ?>
diff --git a/html/inc/bossa_example2.inc b/html/inc/bossa_example2.inc
index 12f145938e..838ac6d5dd 100644
--- a/html/inc/bossa_example2.inc
+++ b/html/inc/bossa_example2.inc
@@ -130,3 +130,7 @@ function show_instance_summary($inst) {
         return "no ellipse";
     }
 }
+
+function user_summary($user) {
+    return "";
+}
diff --git a/html/inc/bossa_example4.inc b/html/inc/bossa_example4.inc
index 3706f23162..73c1174d55 100644
--- a/html/inc/bossa_example4.inc
+++ b/html/inc/bossa_example4.inc
@@ -104,6 +104,10 @@ function instance_summary($opaque_data) {
     return $x;
 }
 
+function user_summary($user) {
+    return "";
+}
+
 function show_style() {
     echo "
         <style type=\"text/css\">