diff --git a/core/includes/database.inc b/core/includes/database.inc
index 7082c37..4269869 100644
--- a/core/includes/database.inc
+++ b/core/includes/database.inc
@@ -531,6 +531,7 @@ function db_next_id($existing_id = 0) {
  * Returns a new DatabaseCondition, set to "OR" all conditions together.
  *
  * @return \Drupal\Core\Database\Query\Condition
+ *   A new Condition object, set to "OR" all conditions together.
  */
 function db_or() {
   return new Condition('OR');
@@ -540,6 +541,7 @@ function db_or() {
  * Returns a new DatabaseCondition, set to "AND" all conditions together.
  *
  * @return \Drupal\Core\Database\Query\Condition
+ *   A new Condition object, set to "AND" all conditions together.
  */
 function db_and() {
   return new Condition('AND');
@@ -549,6 +551,7 @@ function db_and() {
  * Returns a new DatabaseCondition, set to "XOR" all conditions together.
  *
  * @return \Drupal\Core\Database\Query\Condition
+ *   A new Condition object, set to "XOR" all conditions together.
  */
 function db_xor() {
   return new Condition('XOR');
@@ -562,7 +565,9 @@ function db_xor() {
  *
  * @param $conjunction
  *   The conjunction to use for query conditions (AND, OR or XOR).
+ *
  * @return \Drupal\Core\Database\Query\Condition
+ *   A new Condition object, set to the specified conjunction.
  */
 function db_condition($conjunction) {
   return new Condition($conjunction);