diff --git a/pkg/cookiebanner/worker.go b/pkg/cookiebanner/worker.go
index 908cd8cf1..49345c8b1 100644
--- a/pkg/cookiebanner/worker.go
+++ b/pkg/cookiebanner/worker.go
@@ -456,7 +456,7 @@ func isUUIDShape(s string) bool {
 			}
 			continue
 		}
-		if !((ch >= '0' && ch <= '9') || (ch >= 'a' && ch <= 'f') || (ch >= 'A' && ch <= 'F')) {
+		if (ch < '0' || ch > '9') && (ch < 'a' || ch > 'f') && (ch < 'A' || ch > 'F') {
 			return false
 		}
 	}