diff --git a/foam_sync.ps1 b/foam_sync.ps1
index 3dbfd0d..1fa719a 100644
--- a/foam_sync.ps1
+++ b/foam_sync.ps1
@@ -29,7 +29,8 @@ try {
 
   # Run as the user who executes this script.
   $taskPrincipal = New-ScheduledTaskPrincipal -UserId $env:USERNAME -LogonType Interactive
-  $trigger = New-ScheduledTaskTrigger -Once -At (Get-Date) -RepetitionInterval $(New-TimeSpan -Minutes $frequencyMinutes)
+  $repetitionInterval = New-TimeSpan -Minutes $frequencyMinutes
+  $trigger = New-ScheduledTaskTrigger -Once -At (Get-Date) -RepetitionInterval $repetitionInterval
   $action = New-ScheduledTaskAction -Execute $taskExecute -Argument $taskArguments
 
   # Task settings