diff --git a/imgui/src/context.rs b/imgui/src/context.rs
index f4f6392..29b7bc5 100644
--- a/imgui/src/context.rs
+++ b/imgui/src/context.rs
@@ -243,7 +243,7 @@ impl Context {
             platform_name: None,
             renderer_name: None,
             clipboard_ctx: Box::new(ClipboardContext::dummy().into()),
-            ui: Ui(()),
+            ui: Ui(().into()),
         }
     }
     fn is_current_context(&self) -> bool {
@@ -329,7 +329,7 @@ impl SuspendedContext {
             platform_name: None,
             renderer_name: None,
             clipboard_ctx: Box::new(ClipboardContext::dummy().into()),
-            ui: Ui(()),
+            ui: Ui(().into()),
         };
         if ctx.is_current_context() {
             // Oops, the context was activated -> deactivate
diff --git a/imgui/src/lib.rs b/imgui/src/lib.rs
index 4c2d040..f6338cf 100644
--- a/imgui/src/lib.rs
+++ b/imgui/src/lib.rs
@@ -118,7 +118,7 @@ impl Context {
 
 /// A temporary reference for building the user interface for one frame
 #[derive(Debug)]
-pub struct Ui(pub(crate) ());
+pub struct Ui(pub(crate) cell::UnsafeCell<()>);
 
 /// This is our internal buffer that we use for the Ui object.
 ///