diff --git a/components/script/dom/bindings/codegen/CodegenRust.py b/components/script/dom/bindings/codegen/CodegenRust.py
index e497e9a5725..51c29764125 100644
--- a/components/script/dom/bindings/codegen/CodegenRust.py
+++ b/components/script/dom/bindings/codegen/CodegenRust.py
@@ -5186,6 +5186,14 @@ class CGDictionary(CGThing):
             "    }\n"
             "}\n"
             "\n"
+            "impl FromJSValConvertible for ${selfName} {\n"
+            "    type Config = ();\n"
+            "    unsafe fn from_jsval(cx: *mut JSContext, value: HandleValue, _option: ())\n"
+            "                         -> Result<${selfName}, ()> {\n"
+            "        ${selfName}::new(cx, value)\n"
+            "    }\n"
+            "}\n"
+            "\n"
             "impl ToJSValConvertible for ${selfName} {\n"
             "    unsafe fn to_jsval(&self, cx: *mut JSContext, rval: MutableHandleValue) {\n"
             "        let obj = RootedObject::new(cx, JS_NewObject(cx, ptr::null()));\n"
diff --git a/components/script/dom/webidls/TestBinding.webidl b/components/script/dom/webidls/TestBinding.webidl
index 4a933dd2b28..9047833bfa8 100644
--- a/components/script/dom/webidls/TestBinding.webidl
+++ b/components/script/dom/webidls/TestBinding.webidl
@@ -29,6 +29,7 @@ dictionary TestDictionary {
   any anyValue;
   object objectValue;
   TestDictionaryDefaults dict;
+  sequence<TestDictionaryDefaults> seqDict;
 };
 
 dictionary TestDictionaryDefaults {