diff --git a/CMakeLists.txt b/CMakeLists.txt
index 78d9aae646..045808c84b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -82,7 +82,7 @@ message(STATUS "Configuring OpenMW...")
 set(OPENMW_VERSION_MAJOR 0)
 set(OPENMW_VERSION_MINOR 50)
 set(OPENMW_VERSION_RELEASE 0)
-set(OPENMW_LUA_API_REVISION 83)
+set(OPENMW_LUA_API_REVISION 84)
 set(OPENMW_POSTPROCESSING_API_REVISION 3)
 
 set(OPENMW_VERSION_COMMITHASH "")
diff --git a/apps/openmw/mwlua/magicbindings.cpp b/apps/openmw/mwlua/magicbindings.cpp
index 19dada74a7..d2afde9536 100644
--- a/apps/openmw/mwlua/magicbindings.cpp
+++ b/apps/openmw/mwlua/magicbindings.cpp
@@ -976,9 +976,6 @@ namespace MWLua
                     bool hasDuration = !(mgef->mData.mFlags & ESM::MagicEffect::NoDuration);
                     effect.mDuration = hasDuration ? static_cast<float>(enam.mData.mDuration) : 1.f;
 
-                    bool appliedOnce = mgef->mData.mFlags & ESM::MagicEffect::AppliedOnce;
-                    if (!appliedOnce)
-                        effect.mDuration = std::max(1.f, effect.mDuration);
                     effect.mTimeLeft = effect.mDuration;
                     params.getEffects().emplace_back(effect);
 
diff --git a/files/lua_api/openmw/types.lua b/files/lua_api/openmw/types.lua
index 2481c0ae75..b8c4aebe97 100644
--- a/files/lua_api/openmw/types.lua
+++ b/files/lua_api/openmw/types.lua
@@ -331,6 +331,7 @@
 ---
 -- Adds a new spell to the list of active spells (only in global scripts or on self).
 -- Note that this does not play any related VFX or sounds.
+-- Note that this should not be used to add spells without durations (i.e. abilities, curses, and diseases) as they will expire instantly. Use @{#ActorSpells.add} instead.
 -- @function [parent=#ActorActiveSpells] add
 -- @param self
 -- @param #table options A table of parameters. Must contain the following required parameters: