diff --git a/src/peakrdl_busdecoder/__peakrdl__.py b/src/peakrdl_busdecoder/__peakrdl__.py
index 23493aa..2f59c7f 100644
--- a/src/peakrdl_busdecoder/__peakrdl__.py
+++ b/src/peakrdl_busdecoder/__peakrdl__.py
@@ -65,7 +65,7 @@ class Exporter(ExporterSubcommandPlugin):
 
         return cpuifs
 
-    def add_exporter_arguments(self, arg_group: "argparse.ArgumentParser") -> None: # type: ignore
+    def add_exporter_arguments(self, arg_group: "argparse.ArgumentParser") -> None:  # type: ignore
         cpuifs = self.get_cpuifs()
 
         arg_group.add_argument(
diff --git a/src/peakrdl_busdecoder/cpuif/apb3/apb3_cpuif.py b/src/peakrdl_busdecoder/cpuif/apb3/apb3_cpuif.py
index 9e68009..1defbd4 100644
--- a/src/peakrdl_busdecoder/cpuif/apb3/apb3_cpuif.py
+++ b/src/peakrdl_busdecoder/cpuif/apb3/apb3_cpuif.py
@@ -42,4 +42,4 @@ class APB3Cpuif(BaseCpuif):
         if idx is not None:
             return f"{base}[{idx}].{signal}"
 
-        raise ValueError("Must provide an index for arrayed interface signals")
\ No newline at end of file
+        raise ValueError("Must provide an index for arrayed interface signals")
diff --git a/src/peakrdl_busdecoder/cpuif/apb3/apb3_cpuif_flat.py b/src/peakrdl_busdecoder/cpuif/apb3/apb3_cpuif_flat.py
index 981bedf..07c9235 100644
--- a/src/peakrdl_busdecoder/cpuif/apb3/apb3_cpuif_flat.py
+++ b/src/peakrdl_busdecoder/cpuif/apb3/apb3_cpuif_flat.py
@@ -61,4 +61,3 @@ class APB3CpuifFlat(BaseCpuif):
         if idx is not None:
             return f"{base}_{signal}[{idx}]"
         return f"{base}_{signal}[N_{node.inst_name.upper()}S]"
-
diff --git a/src/peakrdl_busdecoder/validate_design.py b/src/peakrdl_busdecoder/validate_design.py
index 4528b15..8249677 100644
--- a/src/peakrdl_busdecoder/validate_design.py
+++ b/src/peakrdl_busdecoder/validate_design.py
@@ -148,7 +148,6 @@ class DesignValidator(RDLListener):
                     node.inst.inst_src_ref,
                 )
 
-
     def exit_AddressableComponent(self, node: AddressableNode) -> None:
         if not isinstance(node, RegNode):
             # Exiting block-like node