diff --git a/packages/pigment-css-react/src/sx.d.ts b/packages/pigment-css-react/src/sx.d.ts
index 4263a9e4..383b0f6f 100644
--- a/packages/pigment-css-react/src/sx.d.ts
+++ b/packages/pigment-css-react/src/sx.d.ts
@@ -6,6 +6,6 @@ type GetTheme<Argument> = Argument extends { theme: infer Theme } ? Theme : neve
 export type SxProp =
   | CSSObjectNoCallback
   | ((theme: GetTheme<ThemeArgs>) => CSSObjectNoCallback)
-  | ReadonlyArray<CSSObjectNoCallback | ((theme: GetTheme<ThemeArgs>) => CSSObjectNoCallback)>;
+  | ReadonlyArray<CSSObjectNoCallback | ((theme: GetTheme<ThemeArgs>) => CSSObjectNoCallback) | false>;
 
 export default function sx(arg: SxProp, componentClass?: string): string;
diff --git a/packages/pigment-css-react/tests/sx.spec.ts b/packages/pigment-css-react/tests/sx.spec.ts
index 0007c7e6..2459bef3 100644
--- a/packages/pigment-css-react/tests/sx.spec.ts
+++ b/packages/pigment-css-react/tests/sx.spec.ts
@@ -11,6 +11,7 @@ const sx3: SxProp = [{ color: 'red' }, { backgroundColor: 'blue', color: 'white'
 const test = true;
 const sx4: SxProp = [
   test ? { color: 'red' } : { backgroundColor: 'blue', color: 'white' },
+  false,
   (theme) => ({
     border: `1px solid ${theme.palette.primary.main}`,
   }),