diff --git a/src/components/timer.vue b/src/components/timer.vue
index 12e9590..da75fd6 100644
--- a/src/components/timer.vue
+++ b/src/components/timer.vue
@@ -171,7 +171,11 @@
 		},
 		mounted() {
 			this.practice_category_id = this.currentWorkingCategory.id
-			this.totalSeconds = parseInt(window.localStorage.getItem('lastTotalSeconds'))
+			if(window.localStorage.getItem('lastTotalSeconds')){
+				this.totalSeconds = parseInt(window.localStorage.getItem('lastTotalSeconds'))
+			} else {
+				this.totalSeconds = 0
+			}
 			this.setManualTime(this.totalSeconds)
 			this.savedPreviousSeconds = this.totalSeconds
 			window.onbeforeunload = this.confirmClose