diff --git a/lib/dml/oci_native_moodle_database.php b/lib/dml/oci_native_moodle_database.php
index 40b046c39cc..530ca2545ff 100644
--- a/lib/dml/oci_native_moodle_database.php
+++ b/lib/dml/oci_native_moodle_database.php
@@ -303,7 +303,7 @@ class oci_native_moodle_database extends moodle_database {
         if (preg_match_all('/\{([a-z][a-z0-9_]*)\}/', $sql, $matches)) {
             foreach($matches[0] as $key=>$match) {
                 $name = $matches[1][$key];
-                if ($this->temptables->is_temptable($name)) {
+                if ($this->temptables && $this->temptables->is_temptable($name)) {
                     $sql = str_replace($match, $this->temptables->get_correct_name($name), $sql);
                 } else {
                     $sql = str_replace($match, $this->prefix.$name, $sql);