diff --git a/check_api/src/main/java/com/google/errorprone/util/ASTHelpers.java b/check_api/src/main/java/com/google/errorprone/util/ASTHelpers.java
index c6f181f9223..a681f156778 100644
--- a/check_api/src/main/java/com/google/errorprone/util/ASTHelpers.java
+++ b/check_api/src/main/java/com/google/errorprone/util/ASTHelpers.java
@@ -1941,7 +1941,10 @@ private static ImmutableList<Type> extractTypes(@Nullable Type type) {
     }
   }
 
-  /** Returns the start position of the node. */
+  /**
+   * Returns the start position of the node. To get the end position of a node, use {@link
+   * VisitorState#getEndPosition}.
+   */
   public static int getStartPosition(Tree tree) {
     return ((JCTree) tree).getStartPosition();
   }