diff --git a/src/manta/manta.py b/src/manta/manta.py
index 1ecfc0d..e724748 100644
--- a/src/manta/manta.py
+++ b/src/manta/manta.py
@@ -33,7 +33,9 @@ class Manta(Elaboratable):
         # Load config from either YAML or JSON
         extension = config_path.split(".")[-1]
         if extension not in ["yaml", "yml", "json"]:
-            raise ValueError(f"Configuration file {config_path} has unrecognized file type.")
+            raise ValueError(
+                f"Configuration file {config_path} has unrecognized file type."
+            )
 
         with open(config_path, "r") as f:
             if extension in ["yaml", "yml"]:
@@ -82,7 +84,6 @@ class Manta(Elaboratable):
 
         return manta
 
-
     def elaborate(self, platform):
         m = Module()
 
diff --git a/src/manta/utils.py b/src/manta/utils.py
index 5b5bfb5..eef0f8e 100644
--- a/src/manta/utils.py
+++ b/src/manta/utils.py
@@ -77,7 +77,7 @@ class CoreContainer:
             value.interface = self._manta.interface
             value.base_addr = self._last_used_addr
 
-            if value.max_addr > (2**16)-1:
+            if value.max_addr > (2**16) - 1:
                 raise ValueError(f"Ran out of address space while allocating core.")
 
             self._last_used_addr = value.max_addr + 1