diff --git a/types/pdfmake/index.d.ts b/types/pdfmake/index.d.ts
index 085c744d4b..34a1d189f1 100644
--- a/types/pdfmake/index.d.ts
+++ b/types/pdfmake/index.d.ts
@@ -3,6 +3,7 @@
 // Definitions by: Milen Stefanov <https://github.com/m1llen1um>
 //                 Rajab Shakirov <https://github.com/radziksh>
 //                 Enzo Volkmann <https://github.com/evolkmann>
+//                 Andi Pätzold <https://github.com/andipaetzold>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.4
 
@@ -183,7 +184,7 @@ declare module "pdfmake/build/pdfmake" {
     interface TDocumentDefinitions {
         background?: () => string | string;
         compress?: boolean;
-        content: string | Content;
+        content: string | Content | Array<string | Content>;
         defaultStyle?: Style;
         footer?: TDocumentHeaderFooterFunction;
         header?: TDocumentHeaderFooterFunction;