diff --git a/packages/main/src/TimePickerClock.ts b/packages/main/src/TimePickerClock.ts
index 3f0d4fc7f016..9055407190c8 100644
--- a/packages/main/src/TimePickerClock.ts
+++ b/packages/main/src/TimePickerClock.ts
@@ -222,7 +222,19 @@ class TimePickerClock extends UI5Element {
 	 * Keeps variables used in interaction calculations.
 	 */
 	@property({ type: Object })
-	_dimensionParameters!: TimePickerClockDimensions;
+	_dimensionParameters: TimePickerClockDimensions = {
+		radius: 0,
+		centerX: 0,
+		centerY: 0,
+		dotHeight: 0,
+		numberHeight: 0,
+		outerMax: 0,
+		outerMin: 0,
+		innerMax: 0,
+		innerMin: 0,
+		offsetX: 0,
+		offsetY: 0,
+	};
 
 	/**
 	 * Mousedown or Touchstart event flag.