diff --git a/kernel/src/init/InitRD.cpp b/kernel/src/init/InitRD.cpp
index ee921098..f6c804bc 100644
--- a/kernel/src/init/InitRD.cpp
+++ b/kernel/src/init/InitRD.cpp
@@ -114,8 +114,8 @@ void InitRD::for_each(void (*callback)(File& f))
 
 void InitRD::init()
 {
-    initrd_base =
-        MemoryManager::get_unaligned_mappings((void*)bootboot.initrd_ptr, bootboot.initrd_size / PAGE_SIZE + 1);
+    initrd_base = MemoryManager::get_unaligned_mappings(
+        (void*)bootboot.initrd_ptr, Utilities::get_blocks_from_size(PAGE_SIZE, bootboot.initrd_size));
     kdbgln("physical base at %lx, size %lx, mapped to %p", bootboot.initrd_ptr, bootboot.initrd_size, initrd_base);
     initrd_initialized = true;
 }
\ No newline at end of file