diff --git a/apps/openmw/mwlua/magicbindings.cpp b/apps/openmw/mwlua/magicbindings.cpp
index ab097a8202..c4c95e5efe 100644
--- a/apps/openmw/mwlua/magicbindings.cpp
+++ b/apps/openmw/mwlua/magicbindings.cpp
@@ -284,6 +284,8 @@ namespace MWLua
             = sol::readonly_property([](const ESM::ENAMstruct& params) -> int { return params.mMagnMin; });
         effectParamsT["magnitudeMax"]
             = sol::readonly_property([](const ESM::ENAMstruct& params) -> int { return params.mMagnMax; });
+        effectParamsT["duration"]
+            = sol::readonly_property([](const ESM::ENAMstruct& params) -> int { return params.mDuration; });
 
         // MagicEffect record
         auto magicEffectT = context.mLua->sol().new_usertype<ESM::MagicEffect>("ESM3_MagicEffect");
diff --git a/files/lua_api/openmw/core.lua b/files/lua_api/openmw/core.lua
index 4fe9b082a5..c5b7c3deba 100644
--- a/files/lua_api/openmw/core.lua
+++ b/files/lua_api/openmw/core.lua
@@ -643,6 +643,7 @@
 -- @field #number area
 -- @field #number magnitudeMin
 -- @field #number magnitudeMax
+-- @field #number duration
 
 ---
 -- @type ActiveEffect