diff --git a/admin/health.php b/admin/health.php
index baa0561fe8e..ced7225704a 100644
--- a/admin/health.php
+++ b/admin/health.php
@@ -363,10 +363,10 @@ class problem_000008 extends problem_base {
         }
         $oldmemlimit = get_real_size($oldmemlimit);
         //now lets change the memory limit to something unique below 128M==134217728
-        if (empty($CFG->memorylimit)) {
+        if (empty($CFG->extramemorylimit)) {
             raise_memory_limit('128M');
         } else {
-            raise_memory_limit($CFG->memorylimit);
+            raise_memory_limit($CFG->extramemorylimit);
         }
         $testmemlimit = get_real_size(@ini_get('memory_limit'));
         //verify the change had any effect at all
diff --git a/backup/lib.php b/backup/lib.php
index 4ae77716551..4990f28488e 100644
--- a/backup/lib.php
+++ b/backup/lib.php
@@ -700,10 +700,10 @@
             return false;
         }
         @ini_set("max_execution_time","3000");
-        if (empty($CFG->memorylimit)) {
+        if (empty($CFG->extramemorylimit)) {
             raise_memory_limit('128M');
         } else {
-            raise_memory_limit($CFG->memorylimit);
+            raise_memory_limit($CFG->extramemorylimit);
         }
 
         if (!$backup_unique_code = restore_precheck($destinationcourse,$pathtofile,$errorstr,true)) {
diff --git a/backup/restore.php b/backup/restore.php
index b241e013831..a039ff9525c 100644
--- a/backup/restore.php
+++ b/backup/restore.php
@@ -147,10 +147,10 @@
 
     //Adjust some php variables to the execution of this script
     @ini_set("max_execution_time","3000");
-    if (empty($CFG->memorylimit)) {
+    if (empty($CFG->extramemorylimit)) {
         raise_memory_limit('128M');
     } else {
-        raise_memory_limit($CFG->memorylimit);
+        raise_memory_limit($CFG->extramemorylimit);
     }
 
     //Call the form, depending the step we are
diff --git a/backup/try.php b/backup/try.php
index 7c3d2d9e4d6..2e759305ba3 100644
--- a/backup/try.php
+++ b/backup/try.php
@@ -19,10 +19,10 @@
 
     //Adjust some php variables to the execution of this script
     @ini_set("max_execution_time","3000");
-    if (empty($CFG->memorylimit)) {
+    if (empty($CFG->extramemorylimit)) {
         raise_memory_limit('128M');
     } else {
-        raise_memory_limit($CFG->memorylimit);
+        raise_memory_limit($CFG->extramemorylimit);
     }
 
     echo "<pre>\n";
diff --git a/search/cron_php5.php b/search/cron_php5.php
index 9c3f939c705..f6a28b0b41b 100644
--- a/search/cron_php5.php
+++ b/search/cron_php5.php
@@ -8,10 +8,10 @@
 try{
     // overrides php limits
     ini_set('max_execution_time', 300);
-    if (empty($CFG->memorylimit)) {
+    if (empty($CFG->extramemorylimit)) {
         raise_memory_limit('128M');
     } else {
-        raise_memory_limit($CFG->memorylimit);
+        raise_memory_limit($CFG->extramemorylimit);
     }
 
     mtrace("\n--DELETE----");