diff --git a/db/migrations/5.2.2_oer_material_suggestion.php b/db/migrations/5.2.2_oer_material_suggestion.php
index 77f828790854350fc7bca62d20c9c2d2f4ca1079..14ff1c5a22118c963ae4fac7cc99c12d16752d05 100644
--- a/db/migrations/5.2.2_oer_material_suggestion.php
+++ b/db/migrations/5.2.2_oer_material_suggestion.php
@@ -8,7 +8,7 @@ class OerMaterialSuggestion extends Migration
 
     public function up()
     {
-        $query = "INSERT INTO `config`
+        $query = "INSERT IGNORE INTO `config`
                   SET `field` = :field,
                       `value` = :value,
                       `type` = :type,