diff --git a/Snakefile b/Snakefile
index d50dfe8e..c26beb91 100644
--- a/Snakefile
+++ b/Snakefile
@@ -319,7 +319,13 @@ rule retrieve_ship_raster:
 rule build_ship_raster:
     input:
         ship_density="data/shipdensity_global.zip",
-        cutouts=expand("cutouts/" + CDIR + "{cutout}.nc", cutout=[config["renewable"][k]['cutout'] for k in config['electricity']['renewable_carriers']])
+        cutouts=expand(
+            "cutouts/" + CDIR + "{cutout}.nc",
+            cutout=[
+                config["renewable"][k]["cutout"]
+                for k in config["electricity"]["renewable_carriers"]
+            ],
+        ),
     output:
         "resources/" + RDIR + "shipdensity_raster.nc",
     log:
diff --git a/doc/release_notes.rst b/doc/release_notes.rst
index 7e7fab1f..76a794ad 100644
--- a/doc/release_notes.rst
+++ b/doc/release_notes.rst
@@ -10,7 +10,7 @@ Release Notes
 Upcoming Release
 ================
 
-* The solver configuration in `config.default.yaml` are now modularized. To change the set of solver options, change to value in `solving`: `solver`: `options` to one of the keys `solving`: `solver_options`. 
+* The solver configuration in `config.default.yaml` are now modularized. To change the set of solver options, change to value in `solving`: `solver`: `options` to one of the keys `solving`: `solver_options`.
 
 
 PyPSA-Eur 0.7.0 (16th February 2023)
diff --git a/test/config.test1.yaml b/test/config.test1.yaml
index 5ab22d35..cf8e06bc 100755
--- a/test/config.test1.yaml
+++ b/test/config.test1.yaml
@@ -46,7 +46,7 @@ renewable:
   solar:
     cutout: be-03-2013-era5
 
-  
+
 clustering:
   exclude_carriers: ["OCGT", "offwind-ac", "coal"]