diff --git a/includes/Parser/Exception/UserVisibleException.php b/includes/Parser/Exception/UserVisibleException.php
index a60694982..f2ab42e5d 100644
--- a/includes/Parser/Exception/UserVisibleException.php
+++ b/includes/Parser/Exception/UserVisibleException.php
@@ -42,7 +42,7 @@ class UserVisibleException extends ExceptionBase {
 	 * @return string
 	 */
 	public function getMessageForLogs(): string {
-		return "ID: {$this->mExceptionID}; position: {$this->mPosition}; params: " . implode( $this->mParams );
+		return "ID: {$this->mExceptionID}; position: {$this->mPosition}; params: " . implode( ', ', $this->mParams );
 	}
 
 	/**