diff --git a/doc/100-General/10-Changelog.md b/doc/100-General/10-Changelog.md
index 21141de..7fff1b1 100644
--- a/doc/100-General/10-Changelog.md
+++ b/doc/100-General/10-Changelog.md
@@ -34,6 +34,7 @@ Released closed milestones can be found on [GitHub](https://github.com/Icinga/ic
 * [#446](https://github.com/Icinga/icinga-powershell-framework/pull/446) Fixes Icinga for Windows progress preference, which sometimes caused UI glitches
 * [#449](https://github.com/Icinga/icinga-powershell-framework/pull/449) Fixes unhandled exception while importing modules during `Install-IcingaComponent` process, because of possible missing dependencies
 * [#451](https://github.com/Icinga/icinga-powershell-framework/pull/451) Fixes PowerShell being unable to enter JEA context if only the Framework is installed and removes the `|` from plugin output, in case a JEA error is thrown that check commands are not present
+* [#452](https://github.com/Icinga/icinga-powershell-framework/pull/452) Fixes unhandled `true` output on the console while running the installer
 
 ### Enhancements
 
diff --git a/lib/core/icingaagent/installer/Repair-IcingaService.psm1 b/lib/core/icingaagent/installer/Repair-IcingaService.psm1
index 9851bb9..885e41b 100644
--- a/lib/core/icingaagent/installer/Repair-IcingaService.psm1
+++ b/lib/core/icingaagent/installer/Repair-IcingaService.psm1
@@ -78,7 +78,7 @@ function Repair-IcingaService()
         $ServiceUser = $ConfigUser;
     }
 
-    Set-IcingaServiceUser -User $ServiceUser -SetPermission;
+    Set-IcingaServiceUser -User $ServiceUser -SetPermission | Out-Null;
     Update-IcingaServiceUser;
 
     Write-IcingaConsoleNotice -Message 'Icinga Agent service was successfully repaired. You can start it now with "Start-Service icinga2"';
diff --git a/lib/core/icingaagent/setters/Set-IcingaAgentServiceUser.psm1 b/lib/core/icingaagent/setters/Set-IcingaAgentServiceUser.psm1
index d104e4b..04229e9 100644
--- a/lib/core/icingaagent/setters/Set-IcingaAgentServiceUser.psm1
+++ b/lib/core/icingaagent/setters/Set-IcingaAgentServiceUser.psm1
@@ -8,12 +8,12 @@ function Set-IcingaServiceUser()
     );
 
     if ([string]::IsNullOrEmpty($User)) {
-        throw 'Please specify a username to modify the service user';
+        Write-IcingaConsoleError -Message 'Please specify a username to modify the service user';
         return $FALSE;
     }
 
     if ($null -eq (Get-Service $Service -ErrorAction SilentlyContinue)) {
-        return;
+        return $FALSE;
     }
 
     if ($User.Contains('\') -eq $FALSE) {
diff --git a/lib/core/repository/Install-IcingaComponent.psm1 b/lib/core/repository/Install-IcingaComponent.psm1
index bb161b2..b8b181b 100644
--- a/lib/core/repository/Install-IcingaComponent.psm1
+++ b/lib/core/repository/Install-IcingaComponent.psm1
@@ -176,7 +176,7 @@ function Install-IcingaComponent()
                 [void](Remove-ItemSecure -Path $entry.FullName -Recurse -Force);
             }
 
-            [void](Copy-ItemSecure -Path $PackageRoot -Destination $ComponentFolder -Recurse -Force);
+            Copy-ItemSecure -Path $PackageRoot -Destination $ComponentFolder -Recurse -Force | Out-Null;
 
             Write-IcingaConsoleNotice 'Installing version "{0}" of component "{1}"' -Objects $ManifestFile.ModuleVersion, $Name.ToLower();
 
@@ -269,7 +269,7 @@ function Install-IcingaComponent()
 
                     Write-IcingaConsoleNotice 'Installing component "service" into "{0}"' -Objects $ServiceDirectory;
 
-                    Copy-ItemSecure -Path $binary.FullName -Destination $UpdateBin -Force;
+                    Copy-ItemSecure -Path $binary.FullName -Destination $UpdateBin -Force | Out-Null;
 
                     [void](Install-IcingaForWindowsService -Path $ServiceBin -User $ServiceUser -Password (Get-IcingaInternalPowerShellServicePassword));
                     Update-IcingaServiceUser;
@@ -373,7 +373,7 @@ function Install-IcingaComponent()
             return $FALSE;
         }
 
-        Set-IcingaServiceUser -User $ServiceUser -SetPermission;
+        Set-IcingaServiceUser -User $ServiceUser -SetPermission | Out-Null;
         Update-IcingaServiceUser;
 
         Write-IcingaConsoleNotice 'Installation of component "agent" with version "{0}" was successful.' -Objects $MSIData.ProductVersion;