diff --git a/src/plugins/plugin.colors.ts b/src/plugins/plugin.colors.ts
index 234171cd2..956447a04 100644
--- a/src/plugins/plugin.colors.ts
+++ b/src/plugins/plugin.colors.ts
@@ -1,4 +1,4 @@
-import type {Chart, ChartDataset} from '../types';
+import type {Chart, ChartConfiguration, ChartDataset} from '../types';
 
 export interface ColorsPluginOptions {
   enabled?: boolean;
@@ -94,7 +94,7 @@ export default {
       type,
       options: {elements},
       data: {datasets}
-    } = chart.config;
+    } = chart.config as ChartConfiguration;
 
     if (containsColorsDefinitions(datasets) || elements && containsColorsDefinitions(elements)) {
       return;
diff --git a/types/index.d.ts b/types/index.d.ts
index 3c55cf010..2e0369a09 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts
@@ -3651,7 +3651,6 @@ export interface ChartConfigurationCustomTypesPerDataset<
   TData = DefaultDataPoint<TType>,
   TLabel = unknown
 > {
-  type: TType;
   data: ChartDataCustomTypesPerDataset<TType, TData, TLabel>;
   options?: ChartOptions<TType>;
   plugins?: Plugin<TType>[];