diff --git a/doc/100-General/10-Changelog.md b/doc/100-General/10-Changelog.md
index 4b9d8ba..9ebd455 100644
--- a/doc/100-General/10-Changelog.md
+++ b/doc/100-General/10-Changelog.md
@@ -15,6 +15,7 @@ Released closed milestones can be found on [GitHub](https://github.com/Icinga/ic
 
 * [#814](https://github.com/Icinga/icinga-powershell-framework/pull/814) Fixes random chars function to truly generate unpredictable character sequences and to replace `Get-Random` which is not entirely secure
 * [#815](https://github.com/Icinga/icinga-powershell-framework/pull/815) Fixes a possible crash for `Test-IcingaAddTypeExist`, causing the Icinga for Windows installation to fail when third party components are checked which are malfunctioning
+* [#816](https://github.com/Icinga/icinga-powershell-framework/issues/816) Fixes plugin execution error while using any `%IfNotMatch`/`%IfNotLike`/`%IfMatch`/`%IfLike` check function for strings containing special characters like `:`
 * [#829](https://github.com/Icinga/icinga-powershell-framework/pull/829) Fixes `Set-IcingaCacheData` to properly remove cache files in case `$null` is passed as value
 * [#833](https://github.com/Icinga/icinga-powershell-framework/issues/833) Fixes registry lookup for Icinga Agent installation to check if the required `DisplayName` attribute is defined before checking
 * [#834](https://github.com/Icinga/icinga-powershell-framework/issues/834) Fixes security catalog compilation error on non-english Windows versions, while properly skipping checks on system SID's and improves security by always adding the `SeDenyNetworkLogonRight` and `SeDenyInteractiveLogonRight` privilege section for the JEA user SID
diff --git a/lib/core/tools/Convert-IcingaPluginThresholds.psm1 b/lib/core/tools/Convert-IcingaPluginThresholds.psm1
index 76fc755..d781611 100644
--- a/lib/core/tools/Convert-IcingaPluginThresholds.psm1
+++ b/lib/core/tools/Convert-IcingaPluginThresholds.psm1
@@ -28,6 +28,12 @@
 .FUNCTIONALITY
     Converts values with units to the lowest unit of this category.
     Accepts Icinga Thresholds.
+.PARAMETER Threshold
+    The threshold value to convert. Supports Icinga plugin threshold
+    syntax.
+.PARAMETER RawValue
+    If set, the function will return the raw value without any conversion.
+    This is required for match/not match checks as example
 .EXAMPLE
     PS>Convert-IcingaPluginThresholds -Threshold '20d';
 
@@ -128,7 +134,8 @@
 function Convert-IcingaPluginThresholds()
 {
     param (
-        [string]$Threshold = $null
+        [string]$Threshold = $null,
+        [switch]$RawValue  = $false
     );
 
     [hashtable]$RetValue = @{
@@ -142,7 +149,10 @@ function Convert-IcingaPluginThresholds()
         'IsDateTime' = $FALSE;
     };
 
-    if ([string]::IsNullOrEmpty($Threshold)) {
+    # Always ensure Value is set, because we just want the raw value
+    if ([string]::IsNullOrEmpty($Threshold) -or $RawValue) {
+        $RetValue.Value = $Threshold;
+
         return $RetValue;
     }
 
diff --git a/lib/icinga/plugin/Compare-IcingaPluginThresholds.psm1 b/lib/icinga/plugin/Compare-IcingaPluginThresholds.psm1
index 998d289..af2a32f 100644
--- a/lib/icinga/plugin/Compare-IcingaPluginThresholds.psm1
+++ b/lib/icinga/plugin/Compare-IcingaPluginThresholds.psm1
@@ -103,13 +103,20 @@ function Compare-IcingaPluginThresholds()
 
     try {
         # Fix possible numeric value comparison issues
-        $TestInput = Test-IcingaDecimal $InputValue;
-        $BaseInput = Test-IcingaDecimal $BaseValue;
-        $MoTData   = @{
+        [bool]$RawValue = $false;
+        $TestInput      = Test-IcingaDecimal $InputValue;
+        $BaseInput      = Test-IcingaDecimal $BaseValue;
+        $MoTData        = @{
             'Label'    = $PerfDataLabel;
             'Interval' = $TimeInterval;
         };
 
+        # Ensure we never do threshold conversions for match/not match checks
+        # This ensures that string values are properly compared to each other
+        if ($Matches -or $NotMatches) {
+            $RawValue = $true;
+        }
+
         # Ensure we do not include our checks for which we do not write any performance data
         # Metrics over time will not work for those, as the metrics are not stored.
         # There just set the variable to null which means they won't be processed
@@ -130,9 +137,9 @@ function Compare-IcingaPluginThresholds()
         $IcingaThresholds | Add-Member -MemberType NoteProperty -Name 'Message'   -Value '';
         $IcingaThresholds | Add-Member -MemberType NoteProperty -Name 'IsOK'      -Value $FALSE;
         $IcingaThresholds | Add-Member -MemberType NoteProperty -Name 'HasError'  -Value $FALSE;
-        $IcingaThresholds | Add-Member -MemberType NoteProperty -Name 'Threshold' -Value (Convert-IcingaPluginThresholds -Threshold $Threshold);
-        $IcingaThresholds | Add-Member -MemberType NoteProperty -Name 'Minimum'   -Value (Convert-IcingaPluginThresholds -Threshold $Minium);
-        $IcingaThresholds | Add-Member -MemberType NoteProperty -Name 'Maximum'   -Value (Convert-IcingaPluginThresholds -Threshold $Maximum);
+        $IcingaThresholds | Add-Member -MemberType NoteProperty -Name 'Threshold' -Value (Convert-IcingaPluginThresholds -Threshold $Threshold -RawValue:$RawValue);
+        $IcingaThresholds | Add-Member -MemberType NoteProperty -Name 'Minimum'   -Value (Convert-IcingaPluginThresholds -Threshold $Minium -RawValue:$RawValue);
+        $IcingaThresholds | Add-Member -MemberType NoteProperty -Name 'Maximum'   -Value (Convert-IcingaPluginThresholds -Threshold $Maximum -RawValue:$RawValue);
 
         if ($TestInput.Decimal) {
             $ConvertedValue = Convert-IcingaPluginThresholds -Threshold ([string]::Format('{0}{1}', $InputValue, $Unit));