diff --git a/mod/glossary/edit.php b/mod/glossary/edit.php
index 67054721e1b..45e84a91e2c 100644
--- a/mod/glossary/edit.php
+++ b/mod/glossary/edit.php
@@ -32,12 +32,6 @@ if (! $glossary = get_record("glossary", "id", $cm->instance)) {
     error("Course module is incorrect");
 }
 
-if ($CFG->dbtype == 'postgres7' ) {
-        $lcase = 'lower';
-} else {
-        $lcase = 'lcase';
-}
-
 if ($e) { // if entry is sepcified
     require_capability('mod/glossary:manageentries', $context);
 } else { // new entry
@@ -139,7 +133,7 @@ if ( $confirm ) {
 
         $permissiongranted = 1;
         if ( !$glossary->allowduplicatedentries ) {
-            if ($dupentries = get_records("glossary_entries","$lcase(concept)", moodle_strtolower($newentry->concept))) {
+            if ($dupentries = get_records("glossary_entries","lower(concept)", moodle_strtolower($newentry->concept))) {
                 foreach ($dupentries as $curentry) {
                     if ( $glossary->id == $curentry->glossaryid ) {
                        if ( $curentry->id != $e ) {
@@ -179,7 +173,7 @@ if ( $confirm ) {
 
         $permissiongranted = 1;
         if ( !$glossary->allowduplicatedentries ) {
-            if ($dupentries = get_record("glossary_entries","$lcase(concept)", moodle_strtolower($newentry->concept), "glossaryid", $glossary->id)) {
+            if ($dupentries = get_record("glossary_entries","lower(concept)", moodle_strtolower($newentry->concept), "glossaryid", $glossary->id)) {
                 $permissiongranted = 0;
             }
         }
diff --git a/mod/glossary/exportentry.php b/mod/glossary/exportentry.php
index d7f60bd22ef..bc3e0c79627 100644
--- a/mod/glossary/exportentry.php
+++ b/mod/glossary/exportentry.php
@@ -23,12 +23,6 @@
         }
     }
     
-    if ($CFG->dbtype == 'postgres7' ) {
-            $lcase = 'lower';
-    } else {
-            $lcase = 'lcase';
-    }
-
     $context = get_context_instance(CONTEXT_MODULE, $cm->id);
     require_capability('mod/glossary:export', $context);
 
@@ -61,7 +55,7 @@
 
         } else {
             if ( ! $mainglossary->allowduplicatedentries ) {
-                $dupentry = get_record('glossary_entries','glossaryid', $mainglossary->id, $lcase.'(concept)',moodle_strtolower(addslashes($entry->concept)));
+                $dupentry = get_record('glossary_entries','glossaryid', $mainglossary->id, 'lower(concept)',moodle_strtolower(addslashes($entry->concept)));
                 if ( $dupentry ) {
                     $PermissionGranted = 0;
                 }
diff --git a/mod/glossary/import.php b/mod/glossary/import.php
index f91bd6d846d..1a83a4bca34 100644
--- a/mod/glossary/import.php
+++ b/mod/glossary/import.php
@@ -226,11 +226,7 @@
                     if ( $newentry->casesensitive ) {
                         $dupentry = get_record("glossary_entries","concept",$newentry->concept,"glossaryid",$glossary->id);
                     } else {
-                        if ($CFG->dbtype == 'postgres7') {
-                            $dupentry = get_record("glossary_entries","lower(concept)",moodle_strtolower($newentry->concept),"glossaryid",$glossary->id);
-                        }else {
-                            $dupentry = get_record("glossary_entries","lcase(concept)",moodle_strtolower($newentry->concept),"glossaryid",$glossary->id);
-                        }
+                        $dupentry = get_record("glossary_entries","lower(concept)",moodle_strtolower($newentry->concept),"glossaryid",$glossary->id);
                     }
                     if ($dupentry) {
                         $permissiongranted = 0;
diff --git a/mod/glossary/sql.php b/mod/glossary/sql.php
index 75d51e6b316..a8c83715117 100644
--- a/mod/glossary/sql.php
+++ b/mod/glossary/sql.php
@@ -95,7 +95,7 @@
             } else {
                 $usernamefield = sql_fullname('u.lastname' , 'u.firsttname');
             }
-            $where = "AND left(ucase($usernamefield)," .  $textlib->strlen($hook, current_charset()) . ") = '$hook'";
+            $where = "AND left(upper($usernamefield)," .  $textlib->strlen($hook, current_charset()) . ") = '$hook'";
         break;
         }
         if ( $hook == 'ALL' ) {
@@ -121,7 +121,7 @@
                 $where = 'AND substr(upper(concept),1,' .  $textlib->strlen($hook, current_charset()) . ') = \'' . $textlib->strtoupper($hook, current_charset()) . '\'';
             break;
             case 'mysql':
-                $where = 'AND left(ucase(concept),' .  $textlib->strlen($hook, current_charset()) . ") = '$hook'";
+                $where = 'AND left(upper(concept),' .  $textlib->strlen($hook, current_charset()) . ") = '$hook'";
             break;
             }
         }
@@ -251,7 +251,7 @@
                     $where = 'AND substr(upper(concept),1,' .  $textlib->strlen($hook, current_charset()) . ') = \'' . $textlib->strtoupper($hook, current_charset()) . '\'';
                 break;
                 case 'mysql':
-                    $where = 'AND left(ucase(concept),' .  $textlib->strlen($hook, current_charset()) . ") = '" . $textlib->strtoupper($hook, current_charset()) . "'";
+                    $where = 'AND left(upper(concept),' .  $textlib->strlen($hook, current_charset()) . ") = '" . $textlib->strtoupper($hook, current_charset()) . "'";
                 break;
                 }
             }
@@ -270,7 +270,7 @@
                     $where = 'AND substr(upper(concept),1,1) NOT IN (' . $textlib->strtoupper($sqlalphabet, current_charset()) . ')';
                 break;
                 case 'mysql':
-                    $where = 'AND left(ucase(concept),1) NOT IN (' . $textlib->strtoupper($sqlalphabet, current_charset()) . ')';
+                    $where = 'AND left(upper(concept),1) NOT IN (' . $textlib->strtoupper($sqlalphabet, current_charset()) . ')';
                 break;
                 }
             }