diff --git a/Sources/InfomaniakCore/Asynchronous/TolerantDispatchGroup.swift b/Sources/InfomaniakCore/Asynchronous/TolerantDispatchGroup.swift
index a1c3b31..8c588cc 100644
--- a/Sources/InfomaniakCore/Asynchronous/TolerantDispatchGroup.swift
+++ b/Sources/InfomaniakCore/Asynchronous/TolerantDispatchGroup.swift
@@ -24,7 +24,9 @@ public final class TolerantDispatchGroup {
     private let dispatchGroup = DispatchGroup()
     private var callBalancer = 0
 
-    public init(qos: DispatchQoS = .default) {
+    /// Init method of TolerantDispatchGroup
+    /// - Parameter qos: The QoS of the underlying queue. Default to `.userInitiated` to prevent most priority inversions
+    public init(qos: DispatchQoS = .userInitiated) {
         syncQueue = DispatchQueue(label: "com.infomaniak.TolerantDispatchGroup", qos: qos)
     }
     
diff --git a/Tests/InfomaniakCoreTests/UTTolerantDispatchGroup.swift b/Tests/InfomaniakCoreTests/UTTolerantDispatchGroup.swift
index 72dc02e..78d0087 100644
--- a/Tests/InfomaniakCoreTests/UTTolerantDispatchGroup.swift
+++ b/Tests/InfomaniakCoreTests/UTTolerantDispatchGroup.swift
@@ -34,13 +34,13 @@ final class UTTolerantDispatchGroup: XCTestCase {
         XCTAssertNotNil(dispatchGroup)
     }
 
-    func testPriorityDefault() {
+    func testDefaultPriorityIsHigh() {
         // WHEN
         let dispatchGroup = TolerantDispatchGroup()
 
         // THEN
         XCTAssertNotNil(dispatchGroup)
-        XCTAssertEqual(dispatchGroup.syncQueue.qos, DispatchQoS.default, "default constructor should have default priority")
+        XCTAssertEqual(dispatchGroup.syncQueue.qos, DispatchQoS.userInitiated, "default constructor should have default priority")
     }
 
     func testPriorityAnyIsSet() {