diff --git a/imgui/src/platform_io.rs b/imgui/src/platform_io.rs
index d5c0523..3c9b122 100644
--- a/imgui/src/platform_io.rs
+++ b/imgui/src/platform_io.rs
@@ -173,7 +173,7 @@ fn get_platform_ctx() -> &'static mut PlatformViewportContext {
 fn get_renderer_ctx() -> &'static mut RendererViewportContext {
     unsafe {
         // should be safe as it is impossible to call any imgui function on a non-active context.
-        &mut *((*(sys::igGetIO() as *const Io)).backend_platform_user_data
+        &mut *((*(sys::igGetIO() as *const Io)).backend_renderer_user_data
             as *mut RendererViewportContext)
     }
 }