diff --git a/src/Jackett.Common/Definitions/mircrew.yml b/src/Jackett.Common/Definitions/mircrew.yml
index d4119101f..206f2e114 100644
--- a/src/Jackett.Common/Definitions/mircrew.yml
+++ b/src/Jackett.Common/Definitions/mircrew.yml
@@ -172,7 +172,7 @@ search:
       selector: a.topictitle
       filters:
         - name: regexp
-          args: "[{](.+?)[}]"
+          args: "(?i)[\\[\\({](1?\\d{1,3}(?:[\\.,]\\d{1,2})?\\s*[KMGTP]?i?B)[\\]\\)}]"
     size:
       text: "{{ if .Result.size_title }}{{ .Result.size_title }}{{ else }}512 MB{{ end }}"
     seeders: