diff --git a/tdutils/td/utils/common.h b/tdutils/td/utils/common.h
index a54d969c1..7ee8e621a 100644
--- a/tdutils/td/utils/common.h
+++ b/tdutils/td/utils/common.h
@@ -113,11 +113,11 @@ class As {
   As(void *ptr) : ptr_(ptr) {
   }
   As(As &&) = default;
-  const As<T> &operator=(const As &new_value) const {
+  As<T> &operator=(const As &new_value) && {
     memcpy(ptr_, new_value.ptr_, sizeof(T));
     return *this;
   }
-  const As<T> &operator=(const T new_value) const {
+  As<T> &operator=(const T new_value) && {
     memcpy(ptr_, &new_value, sizeof(T));
     return *this;
   }
diff --git a/tdutils/test/misc.cpp b/tdutils/test/misc.cpp
index 1d952cd6b..66b06649d 100644
--- a/tdutils/test/misc.cpp
+++ b/tdutils/test/misc.cpp
@@ -593,6 +593,8 @@ TEST(Misc, As) {
   ASSERT_EQ(123, as<int>((const char *)buf));
   ASSERT_EQ(123, as<int>((char *)buf));
   char buf2[100];
+  //auto x = as<int>(buf2);
+  //x = 44342;  //CE
   as<int>(buf2) = as<int>(buf);
   ASSERT_EQ(123, as<int>((const char *)buf2));
   ASSERT_EQ(123, as<int>((char *)buf2));