diff --git a/CHANGELOG-v3.md b/CHANGELOG-v3.md
index da27b48b6f6..6f72c1422bf 100644
--- a/CHANGELOG-v3.md
+++ b/CHANGELOG-v3.md
@@ -8,6 +8,7 @@
 ### Fixed
 - Fixed a bug where Craft could auto-place the `{{ beginBody() }}` and `{{ endBody() }}` tags in the wrong places.
 - Fixed a bug where Craft wasn’t storing custom volume sort orders. ([#3764](https://github.com/craftcms/cms/issues/3764))
+- Fixed a SQL error that would occur when uploading a file with emojis in its name, if using MySQL. ([#3852](https://github.com/craftcms/cms/issues/3852))
 
 ## 3.1.12 - 2019-02-15
 
diff --git a/src/helpers/FileHelper.php b/src/helpers/FileHelper.php
index 43e0a61a1ce..78d61192d57 100644
--- a/src/helpers/FileHelper.php
+++ b/src/helpers/FileHelper.php
@@ -171,6 +171,11 @@ public static function sanitizeFilename(string $filename, array $options = []):
         // Strip any characters not allowed.
         $filename = str_replace($disallowedChars, '', strip_tags($filename));
 
+        if (Craft::$app->getDb()->getIsMysql()) {
+            // Strip emojis
+            $filename = StringHelper::replaceMb4($filename, '');
+        }
+
         if ($separator !== null) {
             $filename = preg_replace('/(\s|' . preg_quote($separator, '/') . ')+/u', $separator, $filename);
         }