diff --git a/src/conversion.rs b/src/conversion.rs
index 7a65597..a27ff25 100644
--- a/src/conversion.rs
+++ b/src/conversion.rs
@@ -148,13 +148,13 @@ impl<'lua> FromLua<'lua> for bool {
     }
 }
 
-impl<'lua> ToLua<'lua> for LightUserData {
+impl<'lua> ToLua<'lua> for LuaLightUserData {
     fn to_lua(self, _: &'lua Lua) -> LuaResult<LuaValue<'lua>> {
         Ok(LuaValue::LightUserData(self))
     }
 }
 
-impl<'lua> FromLua<'lua> for LightUserData {
+impl<'lua> FromLua<'lua> for LuaLightUserData {
     fn from_lua(v: LuaValue, _: &'lua Lua) -> LuaResult<Self> {
         match v {
             LuaValue::LightUserData(ud) => Ok(ud),
diff --git a/src/lua.rs b/src/lua.rs
index 6272cc1..3c1c5c8 100644
--- a/src/lua.rs
+++ b/src/lua.rs
@@ -23,7 +23,7 @@ pub enum LuaValue<'lua> {
     /// The Lua value `true` or `false`.
     Boolean(bool),
     /// A "light userdata" object, equivalent to a raw pointer.
-    LightUserData(LightUserData),
+    LightUserData(LuaLightUserData),
     /// An integer number.
     ///
     /// Any Lua number convertible to a `LuaInteger` will be represented as this variant.
@@ -164,7 +164,7 @@ pub type LuaNumber = ffi::lua_Number;
 
 /// A "light" userdata value. Equivalent to an unmanaged raw pointer.
 #[derive(Debug, Copy, Clone, Eq, PartialEq)]
-pub struct LightUserData(pub *mut c_void);
+pub struct LuaLightUserData(pub *mut c_void);
 
 /// Handle to an internal Lua string.
 ///
@@ -1427,7 +1427,7 @@ impl Lua {
             }
 
             ffi::LUA_TLIGHTUSERDATA => {
-                let ud = LuaValue::LightUserData(LightUserData(ffi::lua_touserdata(state, -1)));
+                let ud = LuaValue::LightUserData(LuaLightUserData(ffi::lua_touserdata(state, -1)));
                 ffi::lua_pop(state, 1);
                 ud
             }
diff --git a/src/tests.rs b/src/tests.rs
index 0dcfb67..7ca50e7 100644
--- a/src/tests.rs
+++ b/src/tests.rs
@@ -707,9 +707,9 @@ fn test_lightuserdata() {
     let res = globals
         .get::<_, LuaFunction>("id")
         .unwrap()
-        .call::<_, LightUserData>(LightUserData(42 as *mut c_void))
+        .call::<_, LuaLightUserData>(LuaLightUserData(42 as *mut c_void))
         .unwrap();
-    assert_eq!(res, LightUserData(42 as *mut c_void));
+    assert_eq!(res, LuaLightUserData(42 as *mut c_void));
 }
 
 #[test]