diff --git a/core/modules/comment/src/CommentStatistics.php b/core/modules/comment/src/CommentStatistics.php
index 0c3fe61..588c831 100644
--- a/core/modules/comment/src/CommentStatistics.php
+++ b/core/modules/comment/src/CommentStatistics.php
@@ -167,7 +167,7 @@ public function getRankingInfo() {
         ),
         // Inverse law that maps the highest view count on the site to 1 and 0
         // to 0. Note that the ROUND here is necessary for PostgreSQL and SQLite
-        // in order to ensure that the :statistics_scale argument is treated as
+        // in order to ensure that the :comment_scale argument is treated as
         // a numeric type, because the PostgreSQL PDO driver sometimes puts
         // values in as strings instead of numbers in complex expressions like
         // this.
diff --git a/core/modules/search/src/SearchQuery.php b/core/modules/search/src/SearchQuery.php
index 5e44832..c1ecb48 100644
--- a/core/modules/search/src/SearchQuery.php
+++ b/core/modules/search/src/SearchQuery.php
@@ -508,7 +508,11 @@ public function addScore($score, $arguments = array(), $multiply = FALSE) {
     if ($multiply) {
       $i = count($this->multiply);
       // Modify the score expression so it is multiplied by the multiplier,
-      // with a divisor to renormalize.
+      // with a divisor to renormalize. Note that the ROUND here is necessary
+      // for PostgreSQL and SQLite in order to ensure that the :multiply_* and
+      // :total_* arguments are treated as a numeric type, because the
+      // PostgreSQL PDO driver sometimes puts values in as strings instead of
+      // numbers in complex expressions like this.
       $score = "(ROUND(:multiply_$i, 4)) * COALESCE(($score), 0) / (ROUND(:total_$i, 4))";
       // Add an argument for the multiplier. The :total_$i argument is taken
       // care of in the execute() method, which is when the total divisor is