diff --git a/packages/primeng/src/inputnumber/inputnumber.ts b/packages/primeng/src/inputnumber/inputnumber.ts
index 4c766c6a13a..6afbed7844f 100644
--- a/packages/primeng/src/inputnumber/inputnumber.ts
+++ b/packages/primeng/src/inputnumber/inputnumber.ts
@@ -590,8 +590,8 @@ export class InputNumber extends BaseComponent implements OnInit, AfterContentIn
             currency: this.currency,
             currencyDisplay: this.currencyDisplay,
             useGrouping: this.useGrouping,
-            minimumFractionDigits: this.minFractionDigits,
-            maximumFractionDigits: this.maxFractionDigits
+            minimumFractionDigits: this.minFractionDigits ?? undefined,
+            maximumFractionDigits: this.maxFractionDigits ?? undefined
         };
     }