diff --git a/lib/classes/module/report/nav.php b/lib/classes/module/report/nav.php
index 3dc298a6f7..10c6e7b8d9 100644
--- a/lib/classes/module/report/nav.php
+++ b/lib/classes/module/report/nav.php
@@ -351,7 +351,7 @@ class module_report_nav extends module_report
 
         $sql = '
             SELECT appli
-                FROM log FORCE INDEX (date_site, appli)
+                FROM log FORCE INDEX (date_site)
                 WHERE ' . $report_filter['sql'] . ' AND appli != \'a:0:{}\' AND !ISNULL(usrid)
             GROUP BY appli';
 
diff --git a/lib/conf.d/bases_structure.xml b/lib/conf.d/bases_structure.xml
index 6e5b47de70..e230b69424 100644
--- a/lib/conf.d/bases_structure.xml
+++ b/lib/conf.d/bases_structure.xml
@@ -2882,13 +2882,6 @@
               <field>os</field>
             </fields>
           </index>
-          <index>
-            <name>appli</name>
-            <type>INDEX</type>
-            <fields>
-              <field>appli</field>
-            </fields>
-          </index>
           <index>
             <name>res</name>
             <type>INDEX</type>
@@ -3012,7 +3005,7 @@
           </field>
           <field>
             <name>search</name>
-            <type>varchar(256)</type>
+            <type>varchar(255)</type>
             <null></null>
             <extra></extra>
             <default></default>
@@ -3119,7 +3112,7 @@
           </field>
           <field>
             <name>final</name>
-            <type>varchar(256)</type>
+            <type>varchar(255)</type>
             <null></null>
             <extra></extra>
             <default></default>
@@ -3220,7 +3213,7 @@
           </field>
           <field>
             <name>referrer</name>
-            <type>varchar(256)</type>
+            <type>varchar(255)</type>
             <null></null>
             <extra></extra>
             <default></default>
@@ -3228,7 +3221,7 @@
           </field>
           <field>
             <name>site_id</name>
-            <type>varchar(256)</type>
+            <type>varchar(255)</type>
             <null></null>
             <extra></extra>
             <default></default>