diff --git a/rts/Lua/LuaBitOps.cpp b/rts/Lua/LuaBitOps.cpp
index 412be4db3d..e56d704c89 100644
--- a/rts/Lua/LuaBitOps.cpp
+++ b/rts/Lua/LuaBitOps.cpp
@@ -58,6 +58,8 @@ static inline unsigned int luaL_checkuint(lua_State* L, int index)
 /*** Returns the bitwise OR of all arguments. Only use up to 24 bit integers.
  *
  * @function math.bit_or
+ * @param a1 integer
+ * @param a2 integer
  * @param ... integer
  * @return integer result
  */
@@ -75,6 +77,8 @@ int LuaBitOps::bit_or(lua_State* L)
 /*** Returns the bitwise AND of all arguments. Only use up to 24 bit integers.
  *
  * @function math.bit_and
+ * @param a1 integer
+ * @param a2 integer
  * @param ... integer
  * @return integer result
  */
@@ -92,6 +96,8 @@ int LuaBitOps::bit_and(lua_State* L)
 /*** Returns the bitwise XOR of all arguments. Only use up to 24 bit integers.
  *
  * @function math.bit_xor
+ * @param a1 integer
+ * @param a2 integer
  * @param ... integer
  * @return integer result
  */
@@ -123,6 +129,8 @@ int LuaBitOps::bit_inv(lua_State* L)
 /*** Set each of the bits of a 24 bit integer. Returns result = result OR (1 << a1) OR (1 << a2) OR ...;)
  *
  * @function math.bit_bits
+ * @param a1 integer
+ * @param a2 integer
  * @param ... integer
  * @return integer result
  */