diff --git a/apps/openmw/mwmechanics/activespells.cpp b/apps/openmw/mwmechanics/activespells.cpp
index 78d366daa..0a47e9ab4 100644
--- a/apps/openmw/mwmechanics/activespells.cpp
+++ b/apps/openmw/mwmechanics/activespells.cpp
@@ -202,6 +202,8 @@ namespace MWMechanics
 
             Whenever a player gains an active spell, send an ID_PLAYER_SPELLS_ACTIVE packet to the server with it
         */
+        bool isStackingSpell = it == end() || stack;
+
         ESM::ActiveSpells::ActiveSpellParams esmParams;
         esmParams.mEffects = effects;
         esmParams.mDisplayName = displayName;
@@ -209,11 +211,11 @@ namespace MWMechanics
 
         if (this == &MWMechanics::getPlayer().getClass().getCreatureStats(MWMechanics::getPlayer()).getActiveSpells())
         {
-            mwmp::Main::get().getLocalPlayer()->sendSpellsActiveAddition(id, esmParams);
+            mwmp::Main::get().getLocalPlayer()->sendSpellsActiveAddition(id, isStackingSpell, esmParams);
         }
         else if (mwmp::Main::get().getCellController()->isLocalActor(MechanicsHelper::getCurrentActor()))
         {
-            mwmp::Main::get().getCellController()->getLocalActor(MechanicsHelper::getCurrentActor())->sendSpellsActiveAddition(id, esmParams);
+            mwmp::Main::get().getCellController()->getLocalActor(MechanicsHelper::getCurrentActor())->sendSpellsActiveAddition(id, isStackingSpell, esmParams);
         }
         /*
             End of tes3mp addition
diff --git a/apps/openmw/mwmp/DedicatedActor.cpp b/apps/openmw/mwmp/DedicatedActor.cpp
index c45a75fa7..625593b18 100644
--- a/apps/openmw/mwmp/DedicatedActor.cpp
+++ b/apps/openmw/mwmp/DedicatedActor.cpp
@@ -366,7 +366,7 @@ void DedicatedActor::addSpellsActive()
     for (const auto& activeSpell : spellsActiveChanges.activeSpells)
     {
         // Don't do a check for a spell's existence, because active effects from potions need to be applied here too
-        activeSpells.addSpell(activeSpell.id, false, activeSpell.params.mEffects, activeSpell.params.mDisplayName, 1);
+        activeSpells.addSpell(activeSpell.id, activeSpell.isStackingSpell, activeSpell.params.mEffects, activeSpell.params.mDisplayName, 1);
     }
 
     reloadPtr();
diff --git a/apps/openmw/mwmp/DedicatedPlayer.cpp b/apps/openmw/mwmp/DedicatedPlayer.cpp
index 452e284fd..f4e9a6b90 100644
--- a/apps/openmw/mwmp/DedicatedPlayer.cpp
+++ b/apps/openmw/mwmp/DedicatedPlayer.cpp
@@ -491,7 +491,7 @@ void DedicatedPlayer::addSpellsActive()
     for (const auto& activeSpell : spellsActiveChanges.activeSpells)
     {
         // Don't do a check for a spell's existence, because active effects from potions need to be applied here too
-        activeSpells.addSpell(activeSpell.id, activeSpell.shouldStack, activeSpell.params.mEffects, activeSpell.params.mDisplayName, 1);
+        activeSpells.addSpell(activeSpell.id, activeSpell.isStackingSpell, activeSpell.params.mEffects, activeSpell.params.mDisplayName, 1);
     }
 }
 
diff --git a/apps/openmw/mwmp/LocalActor.cpp b/apps/openmw/mwmp/LocalActor.cpp
index c01a40b9f..24483527b 100644
--- a/apps/openmw/mwmp/LocalActor.cpp
+++ b/apps/openmw/mwmp/LocalActor.cpp
@@ -285,7 +285,7 @@ void LocalActor::sendEquipment()
     Main::get().getNetworking()->getActorPacket(ID_ACTOR_EQUIPMENT)->Send();
 }
 
-void LocalActor::sendSpellsActiveAddition(const std::string id, ESM::ActiveSpells::ActiveSpellParams params)
+void LocalActor::sendSpellsActiveAddition(const std::string id, bool isStackingSpell, ESM::ActiveSpells::ActiveSpellParams params)
 {
     // Skip any bugged spells that somehow have clientside-only dynamic IDs
     if (id.find("$dynamic") != std::string::npos)
@@ -295,6 +295,7 @@ void LocalActor::sendSpellsActiveAddition(const std::string id, ESM::ActiveSpell
 
     mwmp::ActiveSpell spell;
     spell.id = id;
+    spell.isStackingSpell = isStackingSpell;
     spell.params = params;
     spellsActiveChanges.activeSpells.push_back(spell);
 
diff --git a/apps/openmw/mwmp/LocalActor.hpp b/apps/openmw/mwmp/LocalActor.hpp
index bbb362430..c77deafef 100644
--- a/apps/openmw/mwmp/LocalActor.hpp
+++ b/apps/openmw/mwmp/LocalActor.hpp
@@ -26,7 +26,7 @@ namespace mwmp
         void updateAttackOrCast();
 
         void sendEquipment();
-        void sendSpellsActiveAddition(const std::string id, ESM::ActiveSpells::ActiveSpellParams params);
+        void sendSpellsActiveAddition(const std::string id, bool isStackingSpell, ESM::ActiveSpells::ActiveSpellParams params);
         void sendSpellsActiveRemoval(const std::string id);
         void sendDeath(char newDeathState);
 
diff --git a/apps/openmw/mwmp/LocalPlayer.cpp b/apps/openmw/mwmp/LocalPlayer.cpp
index a76b3bb5f..4b97d0617 100644
--- a/apps/openmw/mwmp/LocalPlayer.cpp
+++ b/apps/openmw/mwmp/LocalPlayer.cpp
@@ -719,7 +719,7 @@ void LocalPlayer::addSpellsActive()
     for (const auto& activeSpell : spellsActiveChanges.activeSpells)
     {
         // Don't do a check for a spell's existence, because active effects from potions need to be applied here too
-        activeSpells.addSpell(activeSpell.id, false, activeSpell.params.mEffects, activeSpell.params.mDisplayName, 1);
+        activeSpells.addSpell(activeSpell.id, activeSpell.isStackingSpell, activeSpell.params.mEffects, activeSpell.params.mDisplayName, 1);
     }
 }
 
@@ -1589,7 +1589,7 @@ void LocalPlayer::sendSpellsActive()
     getNetworking()->getPlayerPacket(ID_PLAYER_SPELLS_ACTIVE)->Send();
 }
 
-void LocalPlayer::sendSpellsActiveAddition(const std::string id, ESM::ActiveSpells::ActiveSpellParams params)
+void LocalPlayer::sendSpellsActiveAddition(const std::string id, bool isStackingSpell, ESM::ActiveSpells::ActiveSpellParams params)
 {
     // Skip any bugged spells that somehow have clientside-only dynamic IDs
     if (id.find("$dynamic") != std::string::npos)
@@ -1599,6 +1599,7 @@ void LocalPlayer::sendSpellsActiveAddition(const std::string id, ESM::ActiveSpel
 
     mwmp::ActiveSpell spell;
     spell.id = id;
+    spell.isStackingSpell = isStackingSpell;
     spell.params = params;
     spellsActiveChanges.activeSpells.push_back(spell);
 
diff --git a/apps/openmw/mwmp/LocalPlayer.hpp b/apps/openmw/mwmp/LocalPlayer.hpp
index 1d2ee0ebb..628e9abb6 100644
--- a/apps/openmw/mwmp/LocalPlayer.hpp
+++ b/apps/openmw/mwmp/LocalPlayer.hpp
@@ -91,7 +91,7 @@ namespace mwmp
         void sendSpellbook();
         void sendSpellChange(std::string id, unsigned int action);
         void sendSpellsActive();
-        void sendSpellsActiveAddition(const std::string id, ESM::ActiveSpells::ActiveSpellParams params);
+        void sendSpellsActiveAddition(const std::string id, bool isStackingSpell, ESM::ActiveSpells::ActiveSpellParams params);
         void sendSpellsActiveRemoval(const std::string id);
         void sendQuickKey(unsigned short slot, int type, const std::string& itemId = "");
         void sendJournalEntry(const std::string& quest, int index, const MWWorld::Ptr& actor);
diff --git a/components/openmw-mp/Base/BaseStructs.hpp b/components/openmw-mp/Base/BaseStructs.hpp
index 5b965693e..706c1d9ee 100644
--- a/components/openmw-mp/Base/BaseStructs.hpp
+++ b/components/openmw-mp/Base/BaseStructs.hpp
@@ -160,6 +160,7 @@ namespace mwmp
     struct ActiveSpell
     {
         std::string id;
+        bool isStackingSpell;
         ESM::ActiveSpells::ActiveSpellParams params;
     };
 
diff --git a/components/openmw-mp/Packets/Actor/PacketActorSpellsActive.cpp b/components/openmw-mp/Packets/Actor/PacketActorSpellsActive.cpp
index 066c20b6b..5b823ebd5 100644
--- a/components/openmw-mp/Packets/Actor/PacketActorSpellsActive.cpp
+++ b/components/openmw-mp/Packets/Actor/PacketActorSpellsActive.cpp
@@ -29,6 +29,7 @@ void PacketActorSpellsActive::Actor(BaseActor &actor, bool send)
     for (auto&& activeSpell : actor.spellsActiveChanges.activeSpells)
     {
         RW(activeSpell.id, send, true);
+        RW(activeSpell.isStackingSpell, send);
         RW(activeSpell.params.mDisplayName, send, true);
 
         uint32_t effectCount;
diff --git a/components/openmw-mp/Packets/Player/PacketPlayerSpellsActive.cpp b/components/openmw-mp/Packets/Player/PacketPlayerSpellsActive.cpp
index 585a190b1..5c7e84526 100644
--- a/components/openmw-mp/Packets/Player/PacketPlayerSpellsActive.cpp
+++ b/components/openmw-mp/Packets/Player/PacketPlayerSpellsActive.cpp
@@ -30,6 +30,7 @@ void PacketPlayerSpellsActive::Packet(RakNet::BitStream *newBitstream, bool send
     for (auto&& activeSpell : player->spellsActiveChanges.activeSpells)
     {
         RW(activeSpell.id, send, true);
+        RW(activeSpell.isStackingSpell, send);
         RW(activeSpell.params.mDisplayName, send, true);
 
         uint32_t effectCount;