diff --git a/src/core/hle/applets/mii_selector.cpp b/src/core/hle/applets/mii_selector.cpp
index 07c7f5b99..237b0bb81 100644
--- a/src/core/hle/applets/mii_selector.cpp
+++ b/src/core/hle/applets/mii_selector.cpp
@@ -39,7 +39,7 @@ ResultCode MiiSelector::ReceiveParameter(const Service::APT::MessageParameter& p
     heap_memory = std::make_shared<std::vector<u8>>(capture_info.size);
     // Create a SharedMemory that directly points to this heap block.
     framebuffer_memory = Kernel::SharedMemory::CreateForApplet(
-        heap_memory, 0, heap_memory->size(), MemoryPermission::ReadWrite,
+        heap_memory, 0, static_cast<u32>(heap_memory->size()), MemoryPermission::ReadWrite,
         MemoryPermission::ReadWrite, "MiiSelector Memory");
 
     // Send the response message with the newly created SharedMemory