diff --git a/extras/fileformats/extras/application/tests/test_application_medical.py b/extras/fileformats/extras/application/tests/test_application_medical.py
index 71aafdb..aa270f4 100644
--- a/extras/fileformats/extras/application/tests/test_application_medical.py
+++ b/extras/fileformats/extras/application/tests/test_application_medical.py
@@ -6,13 +6,13 @@ def test_dicom_metadata():
 
     dicom = Dicom.sample()
 
-    assert dicom.metadata["EchoTime"] == "2.07"
+    assert dicom.metadata["EchoTime"] == 2.07
 
 
 def test_dicom_metadata_with_specific_tags():
 
-    dicom = Dicom(Dicom.sample(), specific_tags=["EchoTime"])
+    dicom = Dicom(Dicom.sample(), metadata_keys=["EchoTime"])
 
-    assert dicom.metadata["EchoTime"] == "2.07"
+    assert dicom.metadata["EchoTime"] == 2.07
     with pytest.raises(KeyError):
         dicom.metadata["PatientName"]
diff --git a/fileformats/generic/file.py b/fileformats/generic/file.py
index 95bfc72..d4002da 100644
--- a/fileformats/generic/file.py
+++ b/fileformats/generic/file.py
@@ -106,7 +106,7 @@ def open(
     def read_contents(
         self, size: ty.Optional[int] = None, offset: int = 0
     ) -> ty.Union[str, bytes]:
-        with self.open("rb") as f:
+        with self.open("rb" if getattr(self, "binary", True) else "r") as f:
             if offset:
                 f.seek(offset, (io.SEEK_SET if offset >= 0 else io.SEEK_END))
             contents = f.read(size) if size else f.read()