diff --git a/src/g_shared/a_pickups.cpp b/src/g_shared/a_pickups.cpp
index f059d8d3a..baa37d56c 100644
--- a/src/g_shared/a_pickups.cpp
+++ b/src/g_shared/a_pickups.cpp
@@ -628,7 +628,7 @@ AInventory *AInventory::CreateTossable ()
 	{
 		return NULL;
 	}
-	if ((ItemFlags & IF_UNDROPPABLE) || Owner == NULL || Amount <= 0)
+	if ((ItemFlags & (IF_UNDROPPABLE|IF_UNTOSSABLE)) || Owner == NULL || Amount <= 0)
 	{
 		return NULL;
 	}
diff --git a/src/g_shared/a_pickups.h b/src/g_shared/a_pickups.h
index 3afcbf5b7..23cac960a 100644
--- a/src/g_shared/a_pickups.h
+++ b/src/g_shared/a_pickups.h
@@ -116,10 +116,10 @@ enum
 	IF_PICKUPGOOD		= 1<<2,		// HandlePickup wants normal pickup FX to happen
 	IF_QUIET			= 1<<3,		// Don't give feedback when picking up
 	IF_AUTOACTIVATE		= 1<<4,		// Automatically activate item on pickup
-	IF_UNDROPPABLE		= 1<<5,		// The player cannot manually drop the item
+	IF_UNDROPPABLE		= 1<<5,		// Item cannot be removed unless done explicitly with RemoveInventory
 	IF_INVBAR			= 1<<6,		// Item appears in the inventory bar
 	IF_HUBPOWER			= 1<<7,		// Powerup is kept when moving in a hub
-//	IF_INTERHUBSTRIP	= 1<<8,		// Item is removed when travelling between hubs
+	IF_UNTOSSABLE		= 1<<8,		// The player cannot manually drop the item
 	IF_ADDITIVETIME		= 1<<9,		// when picked up while another item is active, time is added instead of replaced.
 	IF_ALWAYSPICKUP		= 1<<10,	// For IF_AUTOACTIVATE, MaxAmount=0 items: Always "pick up", even if it doesn't do anything
 	IF_FANCYPICKUPSOUND	= 1<<11,	// Play pickup sound in "surround" mode
diff --git a/src/thingdef/thingdef_data.cpp b/src/thingdef/thingdef_data.cpp
index 30c35a0a4..f85d5cd66 100644
--- a/src/thingdef/thingdef_data.cpp
+++ b/src/thingdef/thingdef_data.cpp
@@ -279,12 +279,13 @@ static FFlagDef InventoryFlags[] =
 	DEFINE_FLAG(IF, UNDROPPABLE, AInventory, ItemFlags),
 	DEFINE_FLAG(IF, INVBAR, AInventory, ItemFlags),
 	DEFINE_FLAG(IF, HUBPOWER, AInventory, ItemFlags),
+	DEFINE_FLAG(IF, UNTOSSABLE, AInventory, ItemFlags),
+	DEFINE_FLAG(IF, ADDITIVETIME, AInventory, ItemFlags),
 	DEFINE_FLAG(IF, ALWAYSPICKUP, AInventory, ItemFlags),
 	DEFINE_FLAG(IF, FANCYPICKUPSOUND, AInventory, ItemFlags),
 	DEFINE_FLAG(IF, BIGPOWERUP, AInventory, ItemFlags),
 	DEFINE_FLAG(IF, KEEPDEPLETED, AInventory, ItemFlags),
 	DEFINE_FLAG(IF, IGNORESKILL, AInventory, ItemFlags),
-	DEFINE_FLAG(IF, ADDITIVETIME, AInventory, ItemFlags),
 	DEFINE_FLAG(IF, NOATTENPICKUPSOUND, AInventory, ItemFlags),
 	DEFINE_FLAG(IF, PERSISTENTPOWER, AInventory, ItemFlags),