diff --git a/plugins/api-docs/src/components/GrpcApiDefinitionWidget/GrpcApiDefinitionWidget.tsx b/plugins/api-docs/src/components/GrpcApiDefinitionWidget/GrpcApiDefinitionWidget.tsx
index 8178f76073..c5f9b071ef 100644
--- a/plugins/api-docs/src/components/GrpcApiDefinitionWidget/GrpcApiDefinitionWidget.tsx
+++ b/plugins/api-docs/src/components/GrpcApiDefinitionWidget/GrpcApiDefinitionWidget.tsx
@@ -20,7 +20,7 @@ import { useTheme } from '@material-ui/core/styles';
 import { BackstageTheme } from '@backstage/theme';
 
 export type GrpcApiDefinitionWidgetProps = {
-  definition: any;
+  definition: string;
 };
 
 export const GrpcApiDefinitionWidget = (