diff --git a/inc/shared/game.h b/inc/shared/game.h
index 4090a920a..c5ae79f51 100644
--- a/inc/shared/game.h
+++ b/inc/shared/game.h
@@ -32,6 +32,18 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #define SVF_DEADMONSTER         BIT(1)      // treat as CONTENTS_DEADMONSTER for collision
 #define SVF_MONSTER             BIT(2)      // treat as CONTENTS_MONSTER for collision
 
+#if USE_PROTOCOL_EXTENSIONS
+#define SVF_PLAYER              BIT(3)
+#define SVF_BOT                 BIT(4)
+#define SVF_NOBOTS              BIT(5)
+#define SVF_RESPAWNING          BIT(6)
+#define SVF_PROJECTILE          BIT(7)
+#define SVF_INSTANCED           BIT(8)
+#define SVF_DOOR                BIT(9)
+#define SVF_NOCULL              BIT(10)
+#define SVF_HULL                BIT(11)
+#endif
+
 // edict->solid values
 
 typedef enum {