diff --git a/CHANGELOG.MD b/CHANGELOG.MD
index a9bc7202..379719cd 100644
--- a/CHANGELOG.MD
+++ b/CHANGELOG.MD
@@ -7,10 +7,11 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
-### Changed 
+### Changed
 
 - TMS-564: Image metadata formatting. 
 - TMS-561: Adjust sitemap button styles #311
+- TMS-567: Use mb_substr for special character support #312
 
 ## [1.30.2] - 2021-12-14
 
@@ -20,7 +21,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [1.30.1] - 2021-12-13
 
-### Changed 
+### Changed
 
 - fix/event-lang: Add language param to API queries #309
 - TMS-421: Fixes for overriding partials in child themes
diff --git a/lib/Traits/EnrichPost.php b/lib/Traits/EnrichPost.php
index 07fe0af6..c65ec364 100644
--- a/lib/Traits/EnrichPost.php
+++ b/lib/Traits/EnrichPost.php
@@ -42,7 +42,7 @@ public static function enrich_post(
         $post->excerpt   = get_the_excerpt( $post );
 
         if ( ! has_excerpt( $post->ID ) && strlen( $post->excerpt ) > $excerpt_length ) {
-            $post->excerpt = trim( substr( $post->excerpt, 0, $excerpt_length ) );
+            $post->excerpt = trim( mb_substr( $post->excerpt, 0, $excerpt_length ) );
         }
 
         if ( $display_categories ) {