From fee6fdd3490ab5b0be882d064cea7f2a29577f99 Mon Sep 17 00:00:00 2001
From: Siriwat K <siriwatkunaporn@gmail.com>
Date: Mon, 7 Oct 2024 14:16:50 +0700
Subject: [PATCH] [typescript] `SystemCSSProperties` should not have
 `SystemStyleObject` as value (#44029)

---
 packages/mui-system/src/styleFunctionSx/styleFunctionSx.d.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/mui-system/src/styleFunctionSx/styleFunctionSx.d.ts b/packages/mui-system/src/styleFunctionSx/styleFunctionSx.d.ts
index 6d373d0ae5e74f..c1f88829348cd9 100644
--- a/packages/mui-system/src/styleFunctionSx/styleFunctionSx.d.ts
+++ b/packages/mui-system/src/styleFunctionSx/styleFunctionSx.d.ts
@@ -51,7 +51,7 @@ export type SystemCssProperties<Theme extends object = {}> = {
   [K in keyof AllSystemCSSProperties]:
     | ResponsiveStyleValue<AllSystemCSSProperties[K]>
     | ((theme: Theme) => ResponsiveStyleValue<AllSystemCSSProperties[K]>)
-    | SystemStyleObject<Theme>;
+    | null;
 };
 
 /**