diff --git a/darkseid/comicarchive.py b/darkseid/comicarchive.py
index f381b58..b36f426 100644
--- a/darkseid/comicarchive.py
+++ b/darkseid/comicarchive.py
@@ -276,7 +276,7 @@ class ComicArchive:
     """Comic Archive implementation"""
 
     class ArchiveType:
-        """Types of archives supported. Currently only .cbz and .cb7"""
+        """Types of archives supported. Currently .cbr, .cbz, and .cb7"""
 
         zip, sevenzip, rar, unknown = list(range(4))
 
@@ -438,7 +438,7 @@ def read_raw_metadata(self) -> Optional[str]:
 
     def write_metadata(self, metadata: Optional[GenericMetadata]) -> bool:
         """Write the metadata to the archive"""
-        if metadata is None:
+        if metadata is None or not self.is_writable():
             return False
         self.apply_archive_info_to_metadata(metadata, calc_page_sizes=True)
         if raw_cix := self.read_raw_metadata():
diff --git a/tests/test_darkseid_comicarchive.py b/tests/test_darkseid_comicarchive.py
index 9d35d3f..2e7fe42 100644
--- a/tests/test_darkseid_comicarchive.py
+++ b/tests/test_darkseid_comicarchive.py
@@ -232,6 +232,11 @@ def test_archive_export_to_cb7(tmp_path, fake_cbz: ComicArchive) -> None:
 #######
 # CBR #
 #######
+@pytest.mark.skipif(sys.platform in ["win32", "darwin"], reason="Skip MacOS & Windows.")
+def test_rar_write(fake_rar: ComicArchive, fake_metadata: GenericMetadata) -> None:
+    assert fake_rar.write_metadata(fake_metadata) is False
+
+
 # Skip test for Windows and MacOS.
 @pytest.mark.skipif(sys.platform in ["win32", "darwin"], reason="Skip MacOS & Windows.")
 def test_rar_file_exists(fake_rar: ComicArchive) -> None: