diff --git a/include/ConflictSet.h b/include/ConflictSet.h
index c087a48..3a5c3c5 100644
--- a/include/ConflictSet.h
+++ b/include/ConflictSet.h
@@ -77,8 +77,8 @@ struct __attribute__((__visibility__("default"))) ConflictSet {
    * versions. */
   void addWrites(const WriteRange *writes, int count, int64_t writeVersion);
 
-  /** Reads where readVersion < oldestVersion will result in `TooOld`. Ignored
-   * if not greater than or equal to all previous oldest versions. */
+  /** Reads where readVersion < oldestVersion will result in `TooOld`. Must be
+   * greater than or equal to all previous oldest versions. */
   void setOldestVersion(int64_t oldestVersion);
 
   /** Reads where readVersion < oldestVersion will result in `TooOld`. There are
@@ -170,8 +170,8 @@ void ConflictSet_addWrites(ConflictSet *cs,
                            const ConflictSet_WriteRange *writes, int count,
                            int64_t writeVersion);
 
-/** Reads where readVersion < oldestVersion will result in `TooOld`. Ignored
- * if not greater than or equal to all previous oldest versions. */
+/** Reads where readVersion < oldestVersion will result in `TooOld`. Must be
+ * greater than or equal to all previous oldest versions. */
 void ConflictSet_setOldestVersion(ConflictSet *cs, int64_t oldestVersion);
 
 /** Reads where readVersion < oldestVersion will result in `TooOld`. There are