diff --git a/code/lib/docs-tools/src/argTypes/docgen/PropDef.ts b/code/lib/docs-tools/src/argTypes/docgen/PropDef.ts
index e15cb5c46a65..df4fc639c521 100644
--- a/code/lib/docs-tools/src/argTypes/docgen/PropDef.ts
+++ b/code/lib/docs-tools/src/argTypes/docgen/PropDef.ts
@@ -2,16 +2,16 @@
 
 export interface JsDocParam {
   name: string | undefined | null;
-  description?: string;
+  description?: string | null;
 }
 
 export interface JsDocReturns {
-  description?: string;
+  description?: string | null;
 }
 
 export interface JsDocTags {
   params?: JsDocParam[];
-  returns?: JsDocReturns;
+  returns?: JsDocReturns | null;
 }
 
 export interface PropSummaryValue {
diff --git a/code/lib/docs-tools/src/argTypes/docgen/createPropDef.ts b/code/lib/docs-tools/src/argTypes/docgen/createPropDef.ts
index 2a86fbc95ddf..ab261afb6116 100644
--- a/code/lib/docs-tools/src/argTypes/docgen/createPropDef.ts
+++ b/code/lib/docs-tools/src/argTypes/docgen/createPropDef.ts
@@ -96,11 +96,11 @@ function applyJsDocResult(propDef: PropDef, jsDocParsingResult?: JsDocParsingRes
         name: x.getPrettyName(),
         description: x.description,
       })),
-    };
+    } satisfies JsDocTags;
 
     if (Object.values(value).filter(Boolean).length > 0) {
       // eslint-disable-next-line no-param-reassign
-      propDef.jsDocTags = value as JsDocTags;
+      propDef.jsDocTags = value;
     }
   }