diff --git a/kernel/kernel/Memory/FileBackedRegion.cpp b/kernel/kernel/Memory/FileBackedRegion.cpp
index 3e2518bf..37fd3e0b 100644
--- a/kernel/kernel/Memory/FileBackedRegion.cpp
+++ b/kernel/kernel/Memory/FileBackedRegion.cpp
@@ -99,13 +99,12 @@ namespace Kernel
 		if (m_type != Type::SHARED)
 			return {};
 
-		const vaddr_t first_page = address & PAGE_ADDR_MASK;
-		const vaddr_t last_page  = BAN::Math::div_round_up<vaddr_t>(address + size, PAGE_SIZE) * PAGE_SIZE;
+		const vaddr_t first_page = BAN::Math::max(m_vaddr, address) & PAGE_ADDR_MASK;
+		const vaddr_t last_page = BAN::Math::div_round_up(BAN::Math::min(m_vaddr + m_size, address + size), PAGE_SIZE) * PAGE_SIZE;
 
 		RWLockRDGuard _(m_shared_data->rw_lock);
 		for (vaddr_t page_addr = first_page; page_addr < last_page; page_addr += PAGE_SIZE)
-			if (contains(page_addr))
-				m_shared_data->sync_no_lock((m_offset + page_addr - m_vaddr) / PAGE_SIZE);
+			m_shared_data->sync_no_lock((m_offset + page_addr - m_vaddr) / PAGE_SIZE);
 
 		return {};
 	}