diff --git a/tests/functional/pyocf/types/cache.py b/tests/functional/pyocf/types/cache.py
index eedd278..c6d5118 100644
--- a/tests/functional/pyocf/types/cache.py
+++ b/tests/functional/pyocf/types/cache.py
@@ -1,5 +1,6 @@
 #
 # Copyright(c) 2019-2022 Intel Corporation
+# Copyright(c) 2024 Huawei Technologies
 # SPDX-License-Identifier: BSD-3-Clause
 #
 
@@ -677,7 +678,7 @@ class Cache:
         self.device = None
 
         if c.results["error"]:
-            raise OcfError("Attaching cache device failed", c.results["error"])
+            raise OcfError("Detaching cache device failed", c.results["error"])
 
     def load_cache(self, device, open_cores=True, disable_cleaner=False):
         self.device = device
diff --git a/tests/functional/tests/management/test_attach_cache.py b/tests/functional/tests/management/test_attach_cache.py
index 4f294c0..5ad3d38 100644
--- a/tests/functional/tests/management/test_attach_cache.py
+++ b/tests/functional/tests/management/test_attach_cache.py
@@ -63,6 +63,18 @@ def test_attach_cache_twice(pyocf_ctx):
     cache.stop()
 
 
+def test_detach_cache_twice(pyocf_ctx):
+    cache_device = RamVolume(Size.from_MiB(50))
+    cache = Cache.start_on_device(cache_device)
+
+    cache.detach_device()
+
+    with pytest.raises(OcfError, match="Detaching cache device failed"):
+        cache.detach_device()
+
+    cache.stop()
+
+
 @pytest.mark.parametrize("cls", CacheLineSize)
 @pytest.mark.parametrize("mode", [CacheMode.WB, CacheMode.WT, CacheMode.WO])
 @pytest.mark.parametrize("new_cache_size", [80, 120])