diff --git a/widget/android/jni/GeckoResultUtils.h b/widget/android/jni/GeckoResultUtils.h
index eee56d41c394..da103f35eea4 100644
--- a/widget/android/jni/GeckoResultUtils.h
+++ b/widget/android/jni/GeckoResultUtils.h
@@ -34,7 +34,7 @@ class GeckoResultCallback final
     OuterCallback outerCallback =
         [inner{std::move(aInnerCallback)}](mozilla::jni::Object::Param aParam) {
           ArgType converted = Java2Native<ArgType>(aParam);
-          inner(converted);
+          inner(std::move(converted));
         };
     auto native = MakeUnique<GeckoResultCallback>(std::move(outerCallback));
     Base::AttachNative(java, std::move(native));
diff --git a/xpcom/threads/MozPromise.h b/xpcom/threads/MozPromise.h
index aa5fc277e944..dbd05c1b17ff 100644
--- a/xpcom/threads/MozPromise.h
+++ b/xpcom/threads/MozPromise.h
@@ -1087,9 +1087,11 @@ class MozPromise : public MozPromiseBase {
     using jni::GeckoResultCallback;
     RefPtr<Private> p = new Private("GeckoResult Glue", false);
     auto resolve = GeckoResultCallback::CreateAndAttach<ResolveValueType>(
-        [p](ResolveValueType aArg) { p->Resolve(aArg, __func__); });
+        [p](ResolveValueType&& aArg) {
+          p->Resolve(MaybeMove(aArg), __func__);
+        });
     auto reject = GeckoResultCallback::CreateAndAttach<RejectValueType>(
-        [p](RejectValueType aArg) { p->Reject(aArg, __func__); });
+        [p](RejectValueType&& aArg) { p->Reject(MaybeMove(aArg), __func__); });
     aGeckoResult->NativeThen(resolve, reject);
     return p;
   }