diff --git a/src/g_inventory/a_weapons.cpp b/src/g_inventory/a_weapons.cpp
index af180a4ea..fa9f63afa 100644
--- a/src/g_inventory/a_weapons.cpp
+++ b/src/g_inventory/a_weapons.cpp
@@ -230,7 +230,7 @@ bool AWeapon::CheckAmmo (int fireMode, bool autoSwitch, bool requireAmmo, int am
 	int enough, enoughmask;
 	int lAmmoUse1;
 
-	if ((dmflags & DF_INFINITE_AMMO) || (Owner->player->cheats & CF_INFINITEAMMO))
+	if ((dmflags & DF_INFINITE_AMMO) || (Owner->FindInventory (PClass::FindActor(NAME_PowerInfiniteAmmo), true) != nullptr))
 	{
 		return true;
 	}
@@ -311,7 +311,7 @@ DEFINE_ACTION_FUNCTION(AWeapon, CheckAmmo)
 
 bool AWeapon::DepleteAmmo (bool altFire, bool checkEnough, int ammouse)
 {
-	if (!((dmflags & DF_INFINITE_AMMO) || (Owner->player->cheats & CF_INFINITEAMMO)))
+	if (!((dmflags & DF_INFINITE_AMMO) || (Owner->FindInventory (PClass::FindActor(NAME_PowerInfiniteAmmo), true) != nullptr)))
 	{
 		if (checkEnough && !CheckAmmo (altFire ? AltFire : PrimaryFire, false, false, ammouse))
 		{
diff --git a/src/namedef.h b/src/namedef.h
index a010fbb8a..ebd9f3e8e 100644
--- a/src/namedef.h
+++ b/src/namedef.h
@@ -203,6 +203,8 @@ xx(CallTryPickup)
 xx(QuestItem25)
 xx(QuestItem28)
 xx(QuestItem29)
+xx(PowerDoubleFiringSpeed)
+xx(PowerInfiniteAmmo)
 
 xx(AcolyteBlue)
 xx(SpectralLightningV1)
diff --git a/src/p_lnspec.cpp b/src/p_lnspec.cpp
index 5375085dd..e71cf2f79 100644
--- a/src/p_lnspec.cpp
+++ b/src/p_lnspec.cpp
@@ -2841,7 +2841,7 @@ FUNC(LS_SetPlayerProperty)
 	// Add or remove a power
 	if (arg2 >= PROP_INVULNERABILITY && arg2 <= PROP_SPEED)
 	{
-		static ENamedName powers[11] =
+		static ENamedName powers[13] =
 		{
 			NAME_PowerInvulnerable,
 			NAME_PowerStrength,
@@ -2853,7 +2853,9 @@ FUNC(LS_SetPlayerProperty)
 			NAME_PowerFlight,
 			NAME_None,
 			NAME_None,
-			NAME_PowerSpeed
+			NAME_PowerSpeed,
+			NAME_PowerInfiniteAmmo,
+			NAME_PowerDoubleFiringSpeed
 		};
 		int power = arg2 - PROP_INVULNERABILITY;
 
diff --git a/src/p_pspr.cpp b/src/p_pspr.cpp
index bf6c79a82..8b8e93f6a 100644
--- a/src/p_pspr.cpp
+++ b/src/p_pspr.cpp
@@ -1381,7 +1381,7 @@ void DPSprite::Tick()
 			Tics--;
 
 			// [BC] Apply double firing speed.
-			if ((Flags & PSPF_POWDOUBLE) && Tics && (Owner->cheats & CF_DOUBLEFIRINGSPEED))
+			if ((Flags & PSPF_POWDOUBLE) && Tics && (Owner->mo->FindInventory (PClass::FindActor(NAME_PowerDoubleFiringSpeed), true)))
 				Tics--;
 
 			if (!Tics)