diff --git a/tdutils/td/utils/port/MemoryMapping.cpp b/tdutils/td/utils/port/MemoryMapping.cpp
index 808dc6bc..234026ac 100644
--- a/tdutils/td/utils/port/MemoryMapping.cpp
+++ b/tdutils/td/utils/port/MemoryMapping.cpp
@@ -84,7 +84,7 @@ Result<MemoryMapping> MemoryMapping::create_from_file(const FileFd &file_fd, con
   auto data_offset = begin - fixed_begin;
   auto data_size = end - fixed_begin;
 
-  void *data = mmap(nullptr, data_size, PROT_READ, MAP_PRIVATE, fd, fixed_begin);
+  void *data = mmap(nullptr, narrow_cast<size_t>(data_size), PROT_READ, MAP_PRIVATE, fd, narrow_cast<off_t>(fixed_begin));
   if (data == MAP_FAILED) {
     return OS_ERROR("mmap call failed");
   }
diff --git a/tdutils/test/misc.cpp b/tdutils/test/misc.cpp
index 2d390618..e3a4606f 100644
--- a/tdutils/test/misc.cpp
+++ b/tdutils/test/misc.cpp
@@ -751,6 +751,8 @@ TEST(Misc, uint128) {
       auto ia = uint128_intrinsic(hi, lo);
       ensure_eq(a, ia);
 #endif
+      nums.push_back(a);
+      nums.pop_back();
       nums.push_back({hi, lo});
     }
   }