diff --git a/cwe.js b/cwe.js
index 29299c8..cb53b9b 100644
--- a/cwe.js
+++ b/cwe.js
@@ -29,7 +29,6 @@
     function CWE_482_665() { // UNUSED_EXPR
         this.foo;
     }
-
     function CWE_484() { // SWITCH_CASE_FALL_THROUGH
         var x;
         switch (x) {
@@ -73,3 +72,7 @@
         }
     }
     
+    function test_2018_12_21() {
+        const a = 1;
+        a = 3;
+    }