diff --git a/arch/z80/src/z180/z180_mmu.c b/arch/z80/src/z180/z180_mmu.c
index c54fda1482..c4ed03aa43 100644
--- a/arch/z80/src/z180/z180_mmu.c
+++ b/arch/z80/src/z180/z180_mmu.c
@@ -498,8 +498,7 @@ int up_addrenv_attach(FAR struct task_group_s *group, FAR struct tcb_s *tcb)
  *
  ****************************************************************************/
 
-int up_addrenv_detach(FAR struct task_group_s *group,
-                      FAR struct task_group_s *tcb);
+int up_addrenv_detach(FAR struct task_group_s *group, FAR struct tcb_s *tcb);
 {
   /* There is nothing that needs to be done */