diff --git a/src/process/ntapi_tt_fork_v2.c b/src/process/ntapi_tt_fork_v2.c
index b558b61..81da4a4 100644
--- a/src/process/ntapi_tt_fork_v2.c
+++ b/src/process/ntapi_tt_fork_v2.c
@@ -5,6 +5,7 @@
 /********************************************************/
 
 #include <psxtypes/psxtypes.h>
+#include <ntapi/nt_atomic.h>
 #include <ntapi/nt_status.h>
 #include <ntapi/nt_object.h>
 #include <ntapi/nt_memory.h>
@@ -149,6 +150,8 @@ intptr_t __fastcall __ntapi_tt_fork_v2(
 		return pid;
 
 	if (pid == 0) {
+		at_store(&__internals->hlock,0);
+
 		if ((status = __ntapi->tty_connect(
 				hport_session,
 				__internals->subsystem->base_named_objects,