diff --git a/sys/arm64/arm64/debug_monitor.c b/sys/arm64/arm64/debug_monitor.c
index 52bcf1e5e603..be79f1184fe9 100644
--- a/sys/arm64/arm64/debug_monitor.c
+++ b/sys/arm64/arm64/debug_monitor.c
@@ -62,6 +62,11 @@ static struct debug_monitor_state kernel_monitor = {
 	.dbg_flags = DBGMON_KERNEL
 };
 
+static int dbg_setup_watchpoint(struct debug_monitor_state *, vm_offset_t,
+    vm_size_t, enum dbg_access_t);
+static int dbg_remove_watchpoint(struct debug_monitor_state *, vm_offset_t,
+    vm_size_t);
+
 /* Called from the exception handlers */
 void dbg_monitor_enter(struct thread *);
 void dbg_monitor_exit(struct thread *, struct trapframe *);
@@ -380,7 +385,7 @@ dbg_find_slot(struct debug_monitor_state *monitor, enum dbg_t type,
 	return (-1);
 }
 
-int
+static int
 dbg_setup_watchpoint(struct debug_monitor_state *monitor, vm_offset_t addr,
     vm_size_t size, enum dbg_access_t access)
 {
@@ -447,7 +452,7 @@ dbg_setup_watchpoint(struct debug_monitor_state *monitor, vm_offset_t addr,
 	return (0);
 }
 
-int
+static int
 dbg_remove_watchpoint(struct debug_monitor_state *monitor, vm_offset_t addr,
     vm_size_t size)
 {
diff --git a/sys/arm64/include/debug_monitor.h b/sys/arm64/include/debug_monitor.h
index befc51e88304..22ed8b5f0e24 100644
--- a/sys/arm64/include/debug_monitor.h
+++ b/sys/arm64/include/debug_monitor.h
@@ -56,9 +56,6 @@ enum dbg_access_t {
 
 void dbg_monitor_init(void);
 void dbg_register_sync(struct debug_monitor_state *);
-int dbg_setup_watchpoint(struct debug_monitor_state *, vm_offset_t, vm_size_t,
-    enum dbg_access_t);
-int dbg_remove_watchpoint(struct debug_monitor_state *, vm_offset_t, vm_size_t);
 
 #ifdef DDB
 void dbg_show_watchpoint(void);