diff --git a/ChangeLog b/ChangeLog
index e55719369..0d0d95bf1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2017-01-05  Daniel Shahaf  <d.s@daniel.shahaf.name>
 
+	* 40270 (after 39995): Src/params.c: Add cross-reference for
+	robustness.
+
 	* 40264: Completion/Unix/Command/_man: Complete all sections
 	after '-a'.
 
diff --git a/Src/params.c b/Src/params.c
index 5b93cafe2..d4904666f 100644
--- a/Src/params.c
+++ b/Src/params.c
@@ -3474,6 +3474,8 @@ strsetfn(Param pm, char *x)
 	pm->node.flags |= PM_NAMEDDIR;
 	adduserdir(pm->node.nam, x, 0, 0);
     }
+    /* If you update this function, you may need to update the
+     * `Implement remainder of strsetfn' block in assignstrvalue(). */
 }
 
 /* Function to get value of an array parameter */