diff --git a/packages/typescript-estree/src/ts-estree/ts-estree.ts b/packages/typescript-estree/src/ts-estree/ts-estree.ts
index afda76ead68d..295af65ee618 100644
--- a/packages/typescript-estree/src/ts-estree/ts-estree.ts
+++ b/packages/typescript-estree/src/ts-estree/ts-estree.ts
@@ -718,6 +718,7 @@ export interface ForStatement extends BaseNode {
 
 export interface FunctionDeclaration extends FunctionDeclarationBase {
   type: AST_NODE_TYPES.FunctionDeclaration;
+  body: BlockStatement;
 }
 
 export interface FunctionExpression extends FunctionDeclarationBase {