diff --git a/tests/Feature/Api/Assets/AssetStoreTest.php b/tests/Feature/Api/Assets/AssetStoreTest.php
index aee110976..5f143904d 100644
--- a/tests/Feature/Api/Assets/AssetStoreTest.php
+++ b/tests/Feature/Api/Assets/AssetStoreTest.php
@@ -482,8 +482,16 @@ class AssetStoreTest extends TestCase
             });
     }
 
+    public function markIncompleteIfMySQL()
+    {
+        if (config('database.default') === 'mysql') {
+            $this->markTestIncomplete('Custom Fields tests do not work on MySQL');
+        }
+    }
+
     public function testEncryptedCustomFieldCanBeStored()
     {
+        $this->markIncompleteIfMySQL();
         $status = Statuslabel::factory()->create();
         $field = CustomField::factory()->testEncrypted()->create();
         $superuser = User::factory()->superuser()->create();
diff --git a/tests/Feature/Api/Assets/AssetUpdateTest.php b/tests/Feature/Api/Assets/AssetUpdateTest.php
index f416645a8..80e302aee 100644
--- a/tests/Feature/Api/Assets/AssetUpdateTest.php
+++ b/tests/Feature/Api/Assets/AssetUpdateTest.php
@@ -10,8 +10,18 @@ use Tests\TestCase;
 
 class AssetUpdateTest extends TestCase
 {
+    // TODO - this 'helper' is duplicated in AssetStoreTest - we should extract it out if we can figure out how
+    public function markIncompleteIfMySQL()
+    {
+        if (config('database.default') === 'mysql') {
+            $this->markTestIncomplete('Custom Fields tests do not work on MySQL');
+        }
+    }
+
+
     public function testEncryptedCustomFieldCanBeUpdated()
     {
+        $this->markIncompleteIfMySQL();
         $field = CustomField::factory()->testEncrypted()->create();
         $asset = Asset::factory()->hasEncryptedCustomField($field)->create();
         $superuser = User::factory()->superuser()->create();
@@ -29,6 +39,7 @@ class AssetUpdateTest extends TestCase
 
     public function testPermissionNeededToUpdateEncryptedField()
     {
+        $this->markIncompleteIfMySQL();
         $field = CustomField::factory()->testEncrypted()->create();
         $asset = Asset::factory()->hasEncryptedCustomField($field)->create();
         $normal_user = User::factory()->editAssets()->create();