diff --git a/src/kernel/exception.rs b/src/kernel/exception.rs
index 24555fe..5a96b44 100644
--- a/src/kernel/exception.rs
+++ b/src/kernel/exception.rs
@@ -1,5 +1,3 @@
-use libc::printf;
-
 use crate::simulator::{machine::{ExceptionType, Machine}, error::{MachineOk, MachineError}};
 
 
diff --git a/src/kernel/thread_manager.rs b/src/kernel/thread_manager.rs
index e5b0e14..ad123f3 100644
--- a/src/kernel/thread_manager.rs
+++ b/src/kernel/thread_manager.rs
@@ -200,13 +200,15 @@ impl ThreadManager {
 mod test {
     use std::{rc::Rc, cell::RefCell};
 
-    use crate::{simulator::{machine::Machine, loader}, kernel::{system::System, thread::Thread, process::Process}};
+    use crate::{simulator::{machine::Machine, loader}, kernel::{system::System, thread::{Thread, self}, process::Process}};
 
     #[test]
     #[ignore = "Pas encore terminé, contient des bugs"]
     fn test_thread_context() {
         let mut machine = Machine::init_machine();
-        let (loader, ptr) = loader::Loader::new("./test/riscv_instructions/simple_arithmetics/unsigned_addition", &mut machine, 0).expect("IO Error");
+        let (loader, ptr1) = loader::Loader::new("./test/riscv_instructions/simple_arithmetics/unsigned_addition", &mut machine, 0).expect("IO Error");
+        println!("{}", ptr1);
+        let (loader2, ptr2) = loader::Loader::new("./test/riscv_instructions/syscall_tests/halt", &mut machine, ptr1 as usize).expect("IO Error");
         let start_pc = loader.elf_header.entrypoint;
         let system = &mut System::default();
 
@@ -214,17 +216,24 @@ mod test {
         let thread1 = Rc::new(RefCell::new(thread1));
         system.get_thread_manager().get_g_alive().push(Rc::clone(&thread1));
 
-        let owner = Process { num_thread: 0 };
-        system.get_thread_manager().start_thread(Rc::clone(&thread1), owner, start_pc, ptr, -1);
-        debug_assert_eq!(thread1.borrow_mut().thread_context.pc, start_pc);
+        let thread2 = Thread::new("th2");
+        let thread2 = Rc::new(RefCell::new(thread2));
+        system.get_thread_manager().get_g_alive().push(Rc::clone(&thread1));
 
-        let to_run = system.get_thread_manager().find_next_to_run().unwrap();
-        debug_assert_eq!(to_run, Rc::clone(&thread1));
+        let owner2 = Process { num_thread: 0 };
+        system.get_thread_manager().start_thread(Rc::clone(&thread2), owner2, ptr1 + loader2.elf_header.entrypoint, ptr2 , -1);
+
+        let owner1 = Process { num_thread: 0 };
+        system.get_thread_manager().start_thread(Rc::clone(&thread1), owner1, loader.elf_header.entrypoint, ptr1, -1);
+        debug_assert_eq!(thread1.borrow_mut().thread_context.pc, start_pc);
         debug_assert!(system.get_thread_manager().get_g_alive().contains(&Rc::clone(&thread1)));
 
+        let to_run = system.get_thread_manager().find_next_to_run().unwrap();
+        debug_assert_eq!(to_run, Rc::clone(&thread2));
+
         system.get_thread_manager().switch_to(&mut machine, Rc::clone(&to_run));
-        debug_assert_eq!(system.get_thread_manager().g_current_thread, Option::Some(Rc::clone(&thread1)));
-        debug_assert_eq!(machine.pc, start_pc);
+        debug_assert_eq!(system.get_thread_manager().g_current_thread, Option::Some(Rc::clone(&thread2)));
+        debug_assert_eq!(machine.pc, ptr1 + loader2.elf_header.entrypoint);
 
         machine.run();
     }
diff --git a/src/simulator/loader.rs b/src/simulator/loader.rs
index 7185c29..6916705 100644
--- a/src/simulator/loader.rs
+++ b/src/simulator/loader.rs
@@ -490,7 +490,7 @@ impl Loader {
                 }
             }
         }
-        Ok(start_index as u64 + end_index)
+        Ok(start_index as u64 + end_index + 4)
     }
 
     /// Load the binary file and store it inside an array and try to parse it, 
diff --git a/src/simulator/machine.rs b/src/simulator/machine.rs
index a5dc3e4..cf320a5 100644
--- a/src/simulator/machine.rs
+++ b/src/simulator/machine.rs
@@ -75,7 +75,7 @@ pub const NUM_PHY_PAGE : u64 = 400;
 /// Must be 2^x
 pub const PAGE_SIZE : u64 = 128;
 /// Must be a multiple of PAGE_SIZE
-pub const MEM_SIZE : usize = (PAGE_SIZE*NUM_PHY_PAGE*100) as usize;
+pub const MEM_SIZE : usize = (PAGE_SIZE*NUM_PHY_PAGE*100_000) as usize;
 
 /// RISC-V Simulator
 pub struct Machine {