diff --git a/CHANGELOG.markdown b/CHANGELOG.markdown
index 1a316d5..cc35918 100644
--- a/CHANGELOG.markdown
+++ b/CHANGELOG.markdown
@@ -15,6 +15,8 @@
   - Obsolete `sys::SetNextWindowContentWidth()` in favor of using
   `sys::igSetNextWindowContentSize()`.
   - Rename `sys::ImGuiTextBuffer_append()` helper to `appendf()`.
+  - Remove `anti_aliased: bool` final parameter of `sys::ImDrawList_AddPolyline`
+  and `sys::ImDrawList_AddConvexPolyFilled`.
 
 
 ## [0.0.18] - 2017-12-23
diff --git a/imgui-sys/src/lib.rs b/imgui-sys/src/lib.rs
index 23db9bd..795ecb0 100644
--- a/imgui-sys/src/lib.rs
+++ b/imgui-sys/src/lib.rs
@@ -2025,14 +2025,12 @@ extern "C" {
         col: ImU32,
         closed: bool,
         thickness: c_float,
-        anti_aliased: bool,
     );
     pub fn ImDrawList_AddConvexPolyFilled(
         list: *mut ImDrawList,
         points: *const ImVec2,
         num_points: c_int,
         col: ImU32,
-        anti_aliased: bool,
     );
     pub fn ImDrawList_AddBezierCurve(
         list: *mut ImDrawList,