diff --git a/pybamm/install_odes.py b/pybamm/install_odes.py
index d1c38a61af..caf36f226e 100644
--- a/pybamm/install_odes.py
+++ b/pybamm/install_odes.py
@@ -20,6 +20,7 @@
 # Build in parallel wherever possible
 os.environ["CMAKE_BUILD_PARALLEL_LEVEL"] = str(cpu_count())
 
+
 def download_extract_library(url, directory):
     # Download and extract archive at url
     if NO_WGET:
diff --git a/scripts/install_KLU_Sundials.py b/scripts/install_KLU_Sundials.py
index 0bfa02cefa..2aa8394ac4 100755
--- a/scripts/install_KLU_Sundials.py
+++ b/scripts/install_KLU_Sundials.py
@@ -95,11 +95,13 @@ def download_extract_library(url, download_dir):
     if libdir == "SuiteSparse_config":
         env["CMAKE_OPTIONS"] = f"-DCMAKE_INSTALL_PREFIX={install_dir}"
     else:
-    # For AMD, COLAMD, BTF and KLU; do not set a BUILD RPATH but use an
-    # INSTALL RPATH in order to ensure that the dynamic libraries are found
-    # at runtime just once. Otherwise, delocate complains about multiple
-    # references to the SuiteSparse_config dynamic library (auditwheel does not).
-        env["CMAKE_OPTIONS"] = f"-DCMAKE_INSTALL_PREFIX={install_dir} -DCMAKE_INSTALL_RPATH={install_dir}/lib -DCMAKE_INSTALL_RPATH_USE_LINK_PATH=FALSE -DCMAKE_BUILD_WITH_INSTALL_RPATH=FALSE"
+        # For AMD, COLAMD, BTF and KLU; do not set a BUILD RPATH but use an
+        # INSTALL RPATH in order to ensure that the dynamic libraries are found
+        # at runtime just once. Otherwise, delocate complains about multiple
+        # references to the SuiteSparse_config dynamic library (auditwheel does not).
+        env[
+            "CMAKE_OPTIONS"
+        ] = f"-DCMAKE_INSTALL_PREFIX={install_dir} -DCMAKE_INSTALL_RPATH={install_dir}/lib -DCMAKE_INSTALL_RPATH_USE_LINK_PATH=FALSE -DCMAKE_BUILD_WITH_INSTALL_RPATH=FALSE"
     subprocess.run(make_cmd, cwd=build_dir, env=env, shell=True, check=True)
     subprocess.run(install_cmd, cwd=build_dir, check=True)