diff --git a/src/pandablocks/_exchange.py b/src/pandablocks/_exchange.py
index 9eebc95b..14474d10 100644
--- a/src/pandablocks/_exchange.py
+++ b/src/pandablocks/_exchange.py
@@ -27,9 +27,9 @@ def check_ok(self):
     @property
     def line(self) -> str:
         """Check received is not multiline and return the line"""
-        assert not self.is_multiline and self.received[0].startswith(
-            "OK ="
-        ), self._error_message()
+        assert not self.is_multiline and self.received[0].startswith("OK ="), (
+            self._error_message()
+        )
         # Remove the OK= header
         return self.received[0][4:]
 
diff --git a/src/pandablocks/connections.py b/src/pandablocks/connections.py
index fd77001e..ab6502d2 100644
--- a/src/pandablocks/connections.py
+++ b/src/pandablocks/connections.py
@@ -215,14 +215,14 @@ def receive_bytes(self, received: bytes) -> bytes:
                     is_multiline = False
                 else:
                     # Check a correctly formatted response
-                    assert line.startswith(
-                        "!"
-                    ), f"Multiline response {line} doesn't start with !"
+                    assert line.startswith("!"), (
+                        f"Multiline response {line} doesn't start with !"
+                    )
             else:
                 # Single line mode
-                assert (
-                    not self._lines
-                ), f"Multiline response {self._lines} not terminated"
+                assert not self._lines, (
+                    f"Multiline response {self._lines} not terminated"
+                )
                 to_send += self._update_contexts([line])
         return to_send
 
diff --git a/tests/test_hdf.py b/tests/test_hdf.py
index 298aa6c7..2c567964 100644
--- a/tests/test_hdf.py
+++ b/tests/test_hdf.py
@@ -89,8 +89,7 @@ def test_field_capture_pcap_bits():
     with pytest.raises(
         ValueError,
         match=(
-            "If any of `scale=None`, `offset=0.0`, or "
-            "`units=` is set, all must be set"
+            "If any of `scale=None`, `offset=0.0`, or `units=` is set, all must be set"
         ),
     ):
         _ = FieldCapture(
diff --git a/tests/test_pandablocks.py b/tests/test_pandablocks.py
index 9d8c0440..e42c5bb5 100644
--- a/tests/test_pandablocks.py
+++ b/tests/test_pandablocks.py
@@ -897,9 +897,9 @@ def test_get_fields_parameterized_type(
         expected_requests.pop(idx)
         responses.pop(idx)
 
-    assert (
-        not expected_requests
-    ), f"Did not receive all expected requests: {expected_requests}"
+    assert not expected_requests, (
+        f"Did not receive all expected requests: {expected_requests}"
+    )
 
     assert get_responses(conn) == [
         (