diff --git a/lib/Format/Format.cpp b/lib/Format/Format.cpp
index 4bc12f88cb..e7e71c4c7e 100644
--- a/lib/Format/Format.cpp
+++ b/lib/Format/Format.cpp
@@ -1245,6 +1245,10 @@ private:
           FormatTok->isOneOf(tok::kw_struct, tok::kw_union, tok::kw_delete)) {
         FormatTok->Tok.setKind(tok::identifier);
         FormatTok->Tok.setIdentifierInfo(nullptr);
+      } else if (Style.Language == FormatStyle::LK_JavaScript &&
+                 FormatTok->isOneOf(tok::kw_struct, tok::kw_union)) {
+        FormatTok->Tok.setKind(tok::identifier);
+        FormatTok->Tok.setIdentifierInfo(nullptr);
       }
     } else if (FormatTok->Tok.is(tok::greatergreater)) {
       FormatTok->Tok.setKind(tok::greater);
diff --git a/unittests/Format/FormatTestJS.cpp b/unittests/Format/FormatTestJS.cpp
index b491cd5865..9be375243c 100644
--- a/unittests/Format/FormatTestJS.cpp
+++ b/unittests/Format/FormatTestJS.cpp
@@ -111,6 +111,8 @@ TEST_F(FormatTestJS, ReservedWords) {
                "  interface: 1,\n"
                "  switch: 1,\n"
                "};");
+  verifyFormat("var struct = 2;");
+  verifyFormat("var union = 2;");
 }
 
 TEST_F(FormatTestJS, ES6DestructuringAssignment) {