diff --git a/lib/core/icingaagent/installer/Install-IcingaAgent.psm1 b/lib/core/icingaagent/installer/Install-IcingaAgent.psm1
index cd5d004..7490a12 100644
--- a/lib/core/icingaagent/installer/Install-IcingaAgent.psm1
+++ b/lib/core/icingaagent/installer/Install-IcingaAgent.psm1
@@ -7,11 +7,6 @@ function Install-IcingaAgent()
         [bool]$AllowUpdates = $FALSE
     );
 
-    $IcingaData       = Get-IcingaAgentInstallation;
-    $InstalledVersion = Get-IcingaAgentVersion;
-    $IcingaInstaller  = Get-IcingaAgentMSIPackage -Source $Source -Version $Version -SkipDownload;
-    $InstallTarget    = $IcingaData.RootDir;
-
     if ([string]::IsNullOrEmpty($Version)) {
         Write-Host 'No Icinga Agent version specified. Skipping installation.';
         return $FALSE;
@@ -22,6 +17,11 @@ function Install-IcingaAgent()
         return $FALSE;
     }
 
+    $IcingaData       = Get-IcingaAgentInstallation;
+    $InstalledVersion = Get-IcingaAgentVersion;
+    $IcingaInstaller  = Get-IcingaAgentMSIPackage -Source $Source -Version $Version -SkipDownload;
+    $InstallTarget    = $IcingaData.RootDir;
+
     if ($Version -eq 'snapshot') {
         if ($IcingaData.InstallDate -ge $IcingaInstaller.LastUpdate -And [string]::IsNullOrEmpty($InstalledVersion.Snapshot) -eq $FALSE) {
             Write-Host 'There is no new snapshot package available which requires to be installed.'