diff --git a/d1x-rebirth/main/multi.c b/d1x-rebirth/main/multi.c
index 2a371c8d4..37662e125 100644
--- a/d1x-rebirth/main/multi.c
+++ b/d1x-rebirth/main/multi.c
@@ -71,8 +71,6 @@ COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
 
 // LOCALIZE ME!!
 
-#define vm_angvec_zero(v) (v)->p=(v)->b=(v)->h=0
-
 void reset_player_object(void); // In object.c but not in object.h
 void multi_reset_object_texture(object *objp);
 void drop_player_eggs(object *playerobj); // from collide.c
@@ -93,6 +91,11 @@ void multi_send_msgsend_state(int state);
 void multi_send_gmode_update();
 void multi_do_gmode_update(const ubyte *buf);
 
+static inline void vm_angvec_zero(vms_angvec *v)
+{
+	(v)->p=(v)->b=(v)->h=0;
+}
+
 //
 // Global variables
 //
diff --git a/d2x-rebirth/main/multi.c b/d2x-rebirth/main/multi.c
index 4addafcb3..3fa1e435d 100644
--- a/d2x-rebirth/main/multi.c
+++ b/d2x-rebirth/main/multi.c
@@ -103,7 +103,10 @@ void multi_do_gmode_update(const ubyte *buf);
 
 // LOCALIZE ME!!
 
-#define vm_angvec_zero(v) (v)->p=(v)->b=(v)->h=0
+static inline void vm_angvec_zero(vms_angvec *v)
+{
+	(v)->p=(v)->b=(v)->h=0;
+}
 
 void drop_player_eggs(object *player); // from collide.c