diff --git a/Tests/BluetoothTests/GATTTests.swift b/Tests/BluetoothTests/GATTTests.swift
index ad97327c9..15cbd84af 100644
--- a/Tests/BluetoothTests/GATTTests.swift
+++ b/Tests/BluetoothTests/GATTTests.swift
@@ -652,7 +652,8 @@ final class GATTTests: XCTestCase {
             server.writePending = {
                 do {
                     while try server.write() {
-                        try client.read()
+                        let didRead = try client.read()
+                        XCTAssert(didRead)
                     }
                 }
                 catch { XCTFail("Error: \(error)") }
@@ -661,7 +662,8 @@ final class GATTTests: XCTestCase {
             client.writePending = {
                 do {
                     while try client.write() {
-                        try server.read()
+                        let didRead = try server.read()
+                        XCTAssert(didRead)
                     }
                 }
                 catch { XCTFail("Error: \(error)") }
@@ -1022,7 +1024,8 @@ extension GATTTests {
             
             while server.socket.input.isEmpty == false {
                 
-                try server.gatt.read()
+                let didRead = try server.gatt.read()
+                assert(didRead)
             }
             
             while try server.gatt.write() {
@@ -1032,7 +1035,8 @@ extension GATTTests {
             
             while client.socket.input.isEmpty == false {
                 
-                try client.gatt.read()
+                let didRead = try client.gatt.read()
+                assert(didRead)
             }
             
         } while didWrite
diff --git a/Tests/BluetoothTests/L2CAPSocket.swift b/Tests/BluetoothTests/L2CAPSocket.swift
index acff17720..255109431 100644
--- a/Tests/BluetoothTests/L2CAPSocket.swift
+++ b/Tests/BluetoothTests/L2CAPSocket.swift
@@ -68,10 +68,11 @@ internal final class TestL2CAPSocket: L2CAPSocketProtocol {
     }
     
     /// Reads from the socket.
-    func recieve(_ bufferSize: Int) throws -> Data {
+    @discardableResult
+    func recieve(_ bufferSize: Int) throws -> Data? {
         
         guard let sentData = self.input.popFirst()
-            else { throw POSIXError(code: .EBUSY) }
+            else { return nil }
         
         let readData = Data(sentData.prefix(bufferSize))