diff --git a/x-pack/plugins/ml/public/application/data_frame_analytics/pages/analytics_management/components/models_management/expanded_row.tsx b/x-pack/plugins/ml/public/application/data_frame_analytics/pages/analytics_management/components/models_management/expanded_row.tsx
index 93be45bbdaf978..87a3f10992c06d 100644
--- a/x-pack/plugins/ml/public/application/data_frame_analytics/pages/analytics_management/components/models_management/expanded_row.tsx
+++ b/x-pack/plugins/ml/public/application/data_frame_analytics/pages/analytics_management/components/models_management/expanded_row.tsx
@@ -430,7 +430,7 @@ export const ExpandedRow: FC<ExpandedRowProps> = ({ item }) => {
                               </h6>
                             </EuiTitle>
                             <EuiCodeBlock
-                              language="painless"
+                              language="json"
                               fontSize="m"
                               paddingSize="m"
                               overflowHeight={300}