diff --git a/rpcs3/Emu/RSX/D3D12/D3D12MemoryHelpers.cpp b/rpcs3/Emu/RSX/D3D12/D3D12MemoryHelpers.cpp
index a07e09fd73..0e1e3c5be7 100644
--- a/rpcs3/Emu/RSX/D3D12/D3D12MemoryHelpers.cpp
+++ b/rpcs3/Emu/RSX/D3D12/D3D12MemoryHelpers.cpp
@@ -14,8 +14,9 @@ void data_cache::store_and_protect_data(u64 key, u32 start, size_t size, u8 form
 void data_cache::protect_data(u64 key, u32 start, size_t size)
 {
 	/// align start to 4096 byte
-	u32 protected_range_start = align(start, 4096);
-	u32 protected_range_size = (u32)align(size, 4096);
+	static const u32 memory_page_size = 4096;
+	u32 protected_range_start = start & ~(memory_page_size - 1);
+	u32 protected_range_size = (u32)align(size, memory_page_size);
 	m_protected_ranges.push_back(std::make_tuple(key, protected_range_start, protected_range_size));
 	vm::page_protect(protected_range_start, protected_range_size, 0, 0, vm::page_writable);
 }