diff --git a/scripts/install b/scripts/install
index d69217f..106e8ca 100644
--- a/scripts/install
+++ b/scripts/install
@@ -107,7 +107,7 @@ sudo sed -i "s|\"SMTPServer\": \"\"|\"SMTPServer\": \"localhost\"|g"
 sudo sed -i "s|\"SMTPPort\": \"\"|\"SMTPPort\": \"25\"|g"                              $final_path/config/config.json
 
 sudo sed -i "s|\"EnableConsole\": true|\"EnableConsole\": false|g"                     $final_path/config/config.json
-sudo sed -i "s|\"FileLocation\": \"\"|\"FileLocation\": \"/var/log/mattermost.log\"|g" $final_path/config/config.json
+sudo sed -i "s|\"FileLocation\": \"\"|\"FileLocation\": \"/var/log\"|g"                $final_path/config/config.json
 if [ $analytics -eq 0 ]; then
     sudo sed -i "s|\"EnableDiagnostics\": true|\"EnableDiagnostics\": false|g"             $final_path/config/config.json
 fi
diff --git a/scripts/upgrade b/scripts/upgrade
index 1887036..7345187 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -51,6 +51,10 @@ sudo rm -f "$archive_filename"
 # Restore configuration file
 sudo cp -f "$backup_config_file" "$config_file"
 
+# Fix log FileLocation path (changed in Mattermost 3.8, makes Mattermost >= 4.2 crash)
+# https://docs.mattermost.com/administration/changelog.html#release-v3-8-3
+sudo sed -i "s|\"FileLocation\": \"/var/log/mattermost.log\"|\"FileLocation\": \"/var/log\"|g" "$config_file"
+
 # Restore file permissions
 sudo chown -R www-data: "$final_path"