diff --git a/xernel/kernel/src/mem/mod.rs b/xernel/kernel/src/mem/mod.rs
index 3a5343c6..b29f1abc 100644
--- a/xernel/kernel/src/mem/mod.rs
+++ b/xernel/kernel/src/mem/mod.rs
@@ -17,7 +17,7 @@ pub const HEAP_START_ADDR: usize = 0xffff_9000_0000_0000;
 // NOTE: stack grows down
 pub const KERNEL_THREAD_STACK_TOP: u64 = 0xffff_a000_0000_0000;
 
-pub const PROCESS_START: u64 = 0x0000_0001_0000_0000;
+pub const PROCESS_START: u64 = 0x0000_0000_0040_0000;
 pub const PROCESS_END: u64 = 0x0000_ffff_ffff_f000;
 
 pub const STACK_SIZE: u64 = 0x40000;