diff --git a/kernel/src/arch/x86_64/Thread.cpp b/kernel/src/arch/x86_64/Thread.cpp
index 09a5793f..a7cac28d 100644
--- a/kernel/src/arch/x86_64/Thread.cpp
+++ b/kernel/src/arch/x86_64/Thread.cpp
@@ -15,7 +15,7 @@ void Thread::set_ip(u64 ip)
     regs.rip = ip;
 }
 
-u64 Thread::ip()
+u64 Thread::ip() const
 {
     return regs.rip;
 }
@@ -25,7 +25,7 @@ void Thread::set_sp(u64 sp)
     regs.rsp = sp;
 }
 
-u64 Thread::sp()
+u64 Thread::sp() const
 {
     return regs.rsp;
 }
diff --git a/kernel/src/thread/Thread.h b/kernel/src/thread/Thread.h
index 082734e3..cfd12b66 100644
--- a/kernel/src/thread/Thread.h
+++ b/kernel/src/thread/Thread.h
@@ -198,10 +198,10 @@ struct Thread : public LinkedListNode<Thread>
     void set_arguments(u64 arg1, u64 arg2, u64 arg3, u64 arg4);
 
     void set_ip(u64 ip);
-    u64 ip();
+    u64 ip() const;
 
     void set_sp(u64 sp);
-    u64 sp();
+    u64 sp() const;
 
     void set_return(u64 ret);
     u64 return_register();