diff --git a/imgui-sys/src/lib.rs b/imgui-sys/src/lib.rs
index 4c615fe..2d7290d 100644
--- a/imgui-sys/src/lib.rs
+++ b/imgui-sys/src/lib.rs
@@ -785,7 +785,7 @@ extern "C" {
     pub fn igRadioButton(label: *const c_char, v: *mut c_int,
                          v_button: c_int) -> bool;
     pub fn igCombo(label: *const c_char, current_item: *mut c_int,
-                   items: *const *const c_char, items_count: c_int, height_in_items: c_int) -> bool;
+                   items: *mut *const c_char, items_count: c_int, height_in_items: c_int) -> bool;
     pub fn igCombo2(label: *const c_char, current_item: *mut c_int,
                     items_separated_by_zeros: *const c_char, height_in_items: c_int) -> bool;
     pub fn igCombo3(label: *const c_char, current_item: *mut c_int,