diff --git a/tests/unit/test_vcr.py b/tests/unit/test_vcr.py
index d6a88fc..d58d96c 100644
--- a/tests/unit/test_vcr.py
+++ b/tests/unit/test_vcr.py
@@ -147,6 +147,24 @@ def test_cassette_library_dir_with_decoration_and_no_explicit_path():
     function_name()
 
 
+def test_cassette_library_dir_with_decoration_and_explicit_path():
+    library_dir = '/libary_dir'
+    vcr = VCR(inject_cassette=True, cassette_library_dir=library_dir)
+    @vcr.use_cassette(path='custom_name')
+    def function_name(cassette):
+        assert cassette._path == os.path.join(library_dir, 'custom_name')
+    function_name()
+
+
+def test_cassette_library_dir_with_decoration_and_super_explicit_path():
+    library_dir = '/libary_dir'
+    vcr = VCR(inject_cassette=True, cassette_library_dir=library_dir)
+    @vcr.use_cassette(path=os.path.join(library_dir, 'custom_name'))
+    def function_name(cassette):
+        assert cassette._path == os.path.join(library_dir, 'custom_name')
+    function_name()
+
+
 def test_cassette_library_dir_with_path_transformer():
     library_dir = '/libary_dir'
     vcr = VCR(inject_cassette=True, cassette_library_dir=library_dir,
diff --git a/vcr/config.py b/vcr/config.py
index 6a5de5b..fb03136 100644
--- a/vcr/config.py
+++ b/vcr/config.py
@@ -120,6 +120,7 @@ class VCR(object):
             def add_cassette_library_dir(path):
                 if not path.startswith(cassette_library_dir):
                     return os.path.join(cassette_library_dir, path)
+                return path
             path_transformer = compose(add_cassette_library_dir, path_transformer)
         elif not func_path_generator:
             # If we don't have a library dir, use the functions