diff --git a/src/mantine-core/src/core/MantineProvider/theme.types.ts b/src/mantine-core/src/core/MantineProvider/theme.types.ts
index a68d55d7294..d3725108f2b 100644
--- a/src/mantine-core/src/core/MantineProvider/theme.types.ts
+++ b/src/mantine-core/src/core/MantineProvider/theme.types.ts
@@ -155,7 +155,9 @@ export type MantineSpacing = keyof MantineSpacingValues | (string & {}) | number
 export type MantineShadow = keyof MantineShadowsValues | (string & {});
 export type MantineLineHeight = keyof MantineLineHeightValues;
 
-export type MantineThemeOther = Record<string, any>;
+export interface MantineThemeOther {
+  [key: string]: any;
+}
 
 export interface MantineGradient {
   from: string;