diff --git a/.drone.star b/.drone.star
index ea271f4dc..779746d9f 100644
--- a/.drone.star
+++ b/.drone.star
@@ -1953,6 +1953,8 @@ def ocisServer(storage, accounts_hash_difficulty = 4, volumes = [], depends_on =
             "OCIS_DECOMPOSEDFS_METADATA_BACKEND": "messagepack",
             "FRONTEND_OCS_ENABLE_DENIALS": True,
             "OCDAV_ALLOW_PROPFIND_DEPTH_INFINITY": True,
+            # fonts map for txt thumbnails (including unicode support)
+            "THUMBNAILS_TXT_FONTMAP_FILE": "%s/tests/config/drone/fontsMap.json" % (dirs["base"]),
         }
         if tika_enabled:
             environment["FRONTEND_FULL_TEXT_SEARCH_ENABLED"] = True
diff --git a/tests/acceptance/expected-failures-API-on-OCIS-storage.md b/tests/acceptance/expected-failures-API-on-OCIS-storage.md
index ea260e369..abce6ba4c 100644
--- a/tests/acceptance/expected-failures-API-on-OCIS-storage.md
+++ b/tests/acceptance/expected-failures-API-on-OCIS-storage.md
@@ -558,10 +558,6 @@ Not everything needs to be implemented for ocis. While the oc10 testsuite covers
 - [coreApiWebdavMove2/moveFileToBlacklistedName.feature:19](https://github.com/owncloud/ocis/blob/master/tests/acceptance/features/coreApiWebdavMove2/moveFileToBlacklistedName.feature#L19)
 - [coreApiWebdavMove2/moveFileToBlacklistedName.feature:20](https://github.com/owncloud/ocis/blob/master/tests/acceptance/features/coreApiWebdavMove2/moveFileToBlacklistedName.feature#L20)
 
-#### [Preview of text file with UTF content does not render correctly](https://github.com/owncloud/ocis/issues/2570)
-
-- [coreApiWebdavPreviews/previews.feature:141](https://github.com/owncloud/ocis/blob/master/tests/acceptance/features/coreApiWebdavPreviews/previews.feature#L141)
-
 #### [Share path in the response is different between share states](https://github.com/owncloud/ocis/issues/2540)
 
 - [coreApiShareManagementToShares/acceptShares.feature:28](https://github.com/owncloud/ocis/blob/master/tests/acceptance/features/coreApiShareManagementToShares/acceptShares.feature#L28)
diff --git a/tests/acceptance/features/coreApiWebdavPreviews/previews.feature b/tests/acceptance/features/coreApiWebdavPreviews/previews.feature
index 11061b10f..5dccdb552 100644
--- a/tests/acceptance/features/coreApiWebdavPreviews/previews.feature
+++ b/tests/acceptance/features/coreApiWebdavPreviews/previews.feature
@@ -140,11 +140,11 @@ Feature: previews of files downloaded through the webdav API
 
   Scenario: preview content should be updated if the file content is updated (content with UTF chars)
     Given user "Alice" has uploaded file "filesForUpload/lorem.txt" to "/lorem.txt"
-    And user "Alice" has uploaded file with content "सिमसिमे पानी" to "/lorem.txt"
+    And user "Alice" has uploaded file with content "ओनक्लाउड फाएल शेरिङ्ग एन्ड सिन्किङ" to "/lorem.txt"
     When user "Alice" downloads the preview of "/lorem.txt" with width "32" and height "32" using the WebDAV API
     Then the HTTP status code should be "200"
     And the downloaded image should be "32" pixels wide and "32" pixels high
-    And the downloaded preview content should match with "सिमसिमे-पानी.png" fixtures preview content
+    And the downloaded preview content should match with "unicode-fixture.png" fixtures preview content
 
 
   Scenario: updates to a file should change the preview for both sharees and sharers
diff --git a/tests/acceptance/fixtures/unicode-fixture.png b/tests/acceptance/fixtures/unicode-fixture.png
new file mode 100644
index 000000000..04837c22b
Binary files /dev/null and b/tests/acceptance/fixtures/unicode-fixture.png differ
diff --git a/tests/config/drone/NotoSans.ttf b/tests/config/drone/NotoSans.ttf
new file mode 100644
index 000000000..7552fbe80
Binary files /dev/null and b/tests/config/drone/NotoSans.ttf differ
diff --git a/tests/config/drone/fontsMap.json b/tests/config/drone/fontsMap.json
new file mode 100644
index 000000000..889781d33
--- /dev/null
+++ b/tests/config/drone/fontsMap.json
@@ -0,0 +1,3 @@
+{
+  "defaultFont": "/drone/src/tests/config/drone/NotoSans.ttf"
+}