diff --git a/cpp/test/mocks.h b/cpp/test/mocks.h
index f7b9bf6d..e8e54141 100644
--- a/cpp/test/mocks.h
+++ b/cpp/test/mocks.h
@@ -447,7 +447,6 @@ class MockTape : public Tape
 {
     FRIEND_TEST(TapeTest, ValidateFile);
     FRIEND_TEST(TapeTest, SetUpModePages);
-    FRIEND_TEST(TapeTest, ReadData);
     FRIEND_TEST(TapeTest, Unload);
 
 public:
diff --git a/cpp/test/tape_test.cpp b/cpp/test/tape_test.cpp
index 8921053f..556c63f7 100644
--- a/cpp/test/tape_test.cpp
+++ b/cpp/test/tape_test.cpp
@@ -104,25 +104,6 @@ TEST(TapeTest, Open)
     EXPECT_NO_THROW(tape.Open());
 }
 
-TEST(TapeTest, ReadData)
-{
-    vector<uint8_t> buf(1);
-    MockTape tape(0);
-
-    tape.SetReady(true);
-    tape.SetBlockCount(1);
-    auto filename = CreateTempFile(1, "tap");
-    tape.SetFilename(filename.string());
-    tape.ValidateFile();
-    EXPECT_THROW(tape.ReadData(buf), scsi_exception);
-
-    tape.CleanUp();
-    filename = CreateTempFile(1, "tar");
-    tape.SetFilename(filename.string());
-    tape.ValidateFile();
-    EXPECT_NO_THROW(tape.ReadData(buf));
-}
-
 TEST(TapeTest, Unload)
 {
     MockTape tape(0);