diff --git a/contracts/utils/structs/Checkpoints.sol b/contracts/utils/structs/Checkpoints.sol
index 5ba6ad92d..09477ee8e 100644
--- a/contracts/utils/structs/Checkpoints.sol
+++ b/contracts/utils/structs/Checkpoints.sol
@@ -154,7 +154,7 @@ library Checkpoints {
     }
 
     /**
-     * @dev Return the index of the last (most recent) checkpoint with key lower or equal than the search key, or `high`
+     * @dev Return the index of the first (oldest) checkpoint with key strictly bigger than the search key, or `high`
      * if there is none. `low` and `high` define a section where to do the search, with inclusive `low` and exclusive
      * `high`.
      *
@@ -178,9 +178,9 @@ library Checkpoints {
     }
 
     /**
-     * @dev Return the index of the first (oldest) checkpoint with key is greater or equal than the search key, or
-     * `high` if there is none. `low` and `high` define a section where to do the search, with inclusive `low` and
-     * exclusive `high`.
+     * @dev Return the index of the first (oldest) checkpoint with key greater or equal than the search key, or `high`
+     * if there is none. `low` and `high` define a section where to do the search, with inclusive `low` and exclusive
+     * `high`.
      *
      * WARNING: `high` should not be greater than the array's length.
      */
@@ -349,7 +349,7 @@ library Checkpoints {
     }
 
     /**
-     * @dev Return the index of the last (most recent) checkpoint with key lower or equal than the search key, or `high`
+     * @dev Return the index of the first (oldest) checkpoint with key strictly bigger than the search key, or `high`
      * if there is none. `low` and `high` define a section where to do the search, with inclusive `low` and exclusive
      * `high`.
      *
@@ -373,9 +373,9 @@ library Checkpoints {
     }
 
     /**
-     * @dev Return the index of the first (oldest) checkpoint with key is greater or equal than the search key, or
-     * `high` if there is none. `low` and `high` define a section where to do the search, with inclusive `low` and
-     * exclusive `high`.
+     * @dev Return the index of the first (oldest) checkpoint with key greater or equal than the search key, or `high`
+     * if there is none. `low` and `high` define a section where to do the search, with inclusive `low` and exclusive
+     * `high`.
      *
      * WARNING: `high` should not be greater than the array's length.
      */
@@ -544,7 +544,7 @@ library Checkpoints {
     }
 
     /**
-     * @dev Return the index of the last (most recent) checkpoint with key lower or equal than the search key, or `high`
+     * @dev Return the index of the first (oldest) checkpoint with key strictly bigger than the search key, or `high`
      * if there is none. `low` and `high` define a section where to do the search, with inclusive `low` and exclusive
      * `high`.
      *
@@ -568,9 +568,9 @@ library Checkpoints {
     }
 
     /**
-     * @dev Return the index of the first (oldest) checkpoint with key is greater or equal than the search key, or
-     * `high` if there is none. `low` and `high` define a section where to do the search, with inclusive `low` and
-     * exclusive `high`.
+     * @dev Return the index of the first (oldest) checkpoint with key greater or equal than the search key, or `high`
+     * if there is none. `low` and `high` define a section where to do the search, with inclusive `low` and exclusive
+     * `high`.
      *
      * WARNING: `high` should not be greater than the array's length.
      */
diff --git a/scripts/generate/templates/Checkpoints.js b/scripts/generate/templates/Checkpoints.js
index 2291bab57..d4e70ee02 100644
--- a/scripts/generate/templates/Checkpoints.js
+++ b/scripts/generate/templates/Checkpoints.js
@@ -159,7 +159,7 @@ function _insert(${opts.checkpointTypeName}[] storage self, ${opts.keyTypeName}
 }
 
 /**
- * @dev Return the index of the last (most recent) checkpoint with key lower or equal than the search key, or \`high\`
+ * @dev Return the index of the first (oldest) checkpoint with key strictly bigger than the search key, or \`high\`
  * if there is none. \`low\` and \`high\` define a section where to do the search, with inclusive \`low\` and exclusive
  * \`high\`.
  *
@@ -183,9 +183,9 @@ function _upperBinaryLookup(
 }
 
 /**
- * @dev Return the index of the first (oldest) checkpoint with key is greater or equal than the search key, or
- * \`high\` if there is none. \`low\` and \`high\` define a section where to do the search, with inclusive \`low\` and
- * exclusive \`high\`.
+ * @dev Return the index of the first (oldest) checkpoint with key greater or equal than the search key, or \`high\`
+ * if there is none. \`low\` and \`high\` define a section where to do the search, with inclusive \`low\` and exclusive
+ * \`high\`.
  *
  * WARNING: \`high\` should not be greater than the array's length.
  */