diff --git a/Modules/Disk/readers.swift b/Modules/Disk/readers.swift
index 3a632d58..da1e817e 100644
--- a/Modules/Disk/readers.swift
+++ b/Modules/Disk/readers.swift
@@ -286,9 +286,11 @@ internal class ActivityReader: Reader<Disks> {
     }
     
     private func driveStats(_ idx: Int, _ d: drive) {
-        guard let props = getIOProperties(d.parent) else {
-            return
-        }
+        let service = IOServiceGetMatchingService(kIOMasterPortDefault, IOBSDNameMatching(kIOMasterPortDefault, 0, d.BSDName))
+        if service == 0 { return }
+        IOObjectRelease(service)
+        
+        guard let props = getIOProperties(d.parent) else { return }
         
         if let statistics = props.object(forKey: "Statistics") as? NSDictionary {
             let readBytes = statistics.object(forKey: "Bytes (Read)") as? Int64 ?? 0
diff --git a/Modules/Disk/settings.swift b/Modules/Disk/settings.swift
index 14df548b..78afae79 100644
--- a/Modules/Disk/settings.swift
+++ b/Modules/Disk/settings.swift
@@ -134,12 +134,11 @@ internal class Settings: NSStackView, Settings_v, NSTextFieldDelegate {
     }
     
     internal func setList(_ list: Disks) {
-        let disks = list.map{ $0.mediaName }
         DispatchQueue.main.async(execute: {
+            let disks = list.map{ $0.mediaName }
             if self.button?.itemTitles.count != disks.count {
                 self.button?.removeAllItems()
             }
-            
             if disks != self.button?.itemTitles {
                 self.button?.addItems(withTitles: disks)
                 self.list = disks