diff --git a/unittests/AST/CommentLexer.cpp b/unittests/AST/CommentLexer.cpp
index c496176..f738709 100644
--- a/unittests/AST/CommentLexer.cpp
+++ b/unittests/AST/CommentLexer.cpp
@@ -1661,7 +1661,8 @@
   const char *Sources[] = {
     "// &#61;",
     "// &#x3d;",
-    "// &#X3d;"
+    "// &#X3d;",
+    "// &#X3D;"
   };
 
   for (size_t i = 0, e = array_lengthof(Sources); i != e; i++) {