diff --git a/doc/31-Changelog.md b/doc/31-Changelog.md
index b0cc88e0..8c1a18c6 100644
--- a/doc/31-Changelog.md
+++ b/doc/31-Changelog.md
@@ -41,6 +41,7 @@ Released closed milestones can be found on [GitHub](https://github.com/Icinga/ic
 * [#143](https://github.com/Icinga/icinga-powershell-framework/issues/143) Fixes the annoying hint from the analyzer to check space before open brace
 * [#152](https://github.com/Icinga/icinga-powershell-framework/issues/152) Fixes incorrect rendering for empty arrays which used `$null` incorrectly instead of `@()` and fixed ValidateSet which now also supports arrays as data type
 * [#159](https://github.com/Icinga/icinga-powershell-framework/pull/159) Fixes crash during update of the Icinga Framework, caused by the newly introduced experimental feature for code caching
+* [#165](https://github.com/Icinga/icinga-powershell-framework/pull/165) Fixes fetching for Icinga Agent certificate for REST-Api daemon on upper/lower case hostname mismatch
 
 ## 1.2.0 (2020-08-28)
 
diff --git a/lib/core/icingaagent/getters/Get-IcingaAgentHostCertificate.psm1 b/lib/core/icingaagent/getters/Get-IcingaAgentHostCertificate.psm1
index 8b868938..027461d7 100644
--- a/lib/core/icingaagent/getters/Get-IcingaAgentHostCertificate.psm1
+++ b/lib/core/icingaagent/getters/Get-IcingaAgentHostCertificate.psm1
@@ -7,7 +7,7 @@ function Get-IcingaAgentHostCertificate()
     $CertPath              = $null;
 
     foreach ($certFile in $FolderContent) {
-        if ($certFile.Name.Contains($Hostname)) {
+        if ($certFile.Name -like ([string]::Format('{0}.crt', $Hostname))) {
             $CertPath = $certFile.FullName;
             break;
         }