diff --git a/src/sphobjinv/inventory.py b/src/sphobjinv/inventory.py
index ad490193..5c55d457 100644
--- a/src/sphobjinv/inventory.py
+++ b/src/sphobjinv/inventory.py
@@ -565,7 +565,7 @@ def _general_import(self):
         import_errors = {
             SourceTypes.BytesPlaintext: TypeError,
             SourceTypes.BytesZlib: (zlib_error, TypeError),
-            SourceTypes.FnamePlaintext: (OSError, TypeError),
+            SourceTypes.FnamePlaintext: (OSError, TypeError, UnicodeDecodeError),
             SourceTypes.FnameZlib: (OSError, TypeError, zlib_error),
             SourceTypes.DictJSON: (ValidationError),
         }
diff --git a/src/sphobjinv/re.py b/src/sphobjinv/re.py
index 9e525f7b..ac639f94 100644
--- a/src/sphobjinv/re.py
+++ b/src/sphobjinv/re.py
@@ -77,7 +77,7 @@
     :                        # Dividing colon
     (?P<{2}>\w+)             # --> Role
     \s+                      # Dividing space
-    (?P<{3}>-?\d+)           # --> Priority
+    (?P<{3}>\S+)             # --> Priority
     \s+                      # Dividing space
     (?P<{4}>\S+)             # --> URI
     \s+                      # Dividing space
diff --git a/tests/resource/objects_mdn.inv b/tests/resource/objects_mdn.inv
new file mode 100644
index 00000000..3edaf693
Binary files /dev/null and b/tests/resource/objects_mdn.inv differ