diff --git a/src/Services/InfoProviderSystem/DTOs/ParameterDTO.php b/src/Services/InfoProviderSystem/DTOs/ParameterDTO.php
index 6ffb421d..35ab9efc 100644
--- a/src/Services/InfoProviderSystem/DTOs/ParameterDTO.php
+++ b/src/Services/InfoProviderSystem/DTOs/ParameterDTO.php
@@ -137,7 +137,7 @@ class ParameterDTO
      */
     public static function splitIntoValueAndUnit(string $value): ?array
     {
-       if (preg_match('/^(?<value>-?[0-9\.]+)\s*(?<unit>[%Ω°℃a-z_\/]+\s?\w{0,4})$/iu', $value, $matches)) {
+       if (preg_match('/^(?<value>-?[0-9\.]+)\s*(?<unit>[%Ωµ°℃a-z_\/]+\s?\w{0,4})$/iu', $value, $matches)) {
            $value = $matches['value'];
            $unit = $matches['unit'];