diff --git a/lib/editor/tinymce/lib.php b/lib/editor/tinymce/lib.php
index 39a85ffd263..99c070a8ca9 100644
--- a/lib/editor/tinymce/lib.php
+++ b/lib/editor/tinymce/lib.php
@@ -141,6 +141,7 @@ class tinymce_texteditor extends texteditor {
                     'theme_advanced_fonts' => "Trebuchet=Trebuchet MS,Verdana,Arial,Helvetica,sans-serif;Arial=arial,helvetica,sans-serif;Courier New=courier new,courier,monospace;Georgia=georgia,times new roman,times,serif;Tahoma=tahoma,arial,helvetica,sans-serif;Times New Roman=times new roman,times,serif;Verdana=verdana,arial,helvetica,sans-serif;Impact=impact;Wingdings=wingdings",
                     'theme_advanced_resize_horizontal' => true,
                     'theme_advanced_resizing' => true,
+                    'theme_advanced_resizing_min_height' => 30,
                     'theme_advanced_toolbar_location' => "top",
                     'theme_advanced_statusbar_location' => "bottom",
                     'spellchecker_rpc_url' => $CFG->wwwroot."/lib/editor/tinymce/tiny_mce/$this->version/plugins/spellchecker/rpc.php"