diff --git a/ogscm/building_blocks/osu_benchmarks.py b/ogscm/building_blocks/osu_benchmarks.py
index f224160052f06fba6dfa26811303955d4a4ab659..5dbb4cc54a2861c3944134a64ce2062c15830040 100644
--- a/ogscm/building_blocks/osu_benchmarks.py
+++ b/ogscm/building_blocks/osu_benchmarks.py
@@ -103,10 +103,10 @@ class osu_benchmarks(
 
         # Environment
         libexec_path = "{0}/libexec/osu-micro-benchmarks/mpi".format(self.prefix)
-        self.__environment_variables[
-            "PATH"
-        ] = "{0}/collective:{0}/one-sided:{0}/pt2pt:{0}/startup::$PATH".format(
-            libexec_path
+        self.__environment_variables["PATH"] = (
+            "{0}/collective:{0}/one-sided:{0}/pt2pt:{0}/startup::$PATH".format(
+                libexec_path
+            )
         )
 
         # Labels
diff --git a/ogscm/building_blocks/paraview.py b/ogscm/building_blocks/paraview.py
index e197798485ad23ed7b4a257ebf358f6afa9d2022..44f8772cbab073b1a4f0085d5828868b6e7c2855 100644
--- a/ogscm/building_blocks/paraview.py
+++ b/ogscm/building_blocks/paraview.py
@@ -126,9 +126,9 @@ class paraview(
             if self.ldconfig:
                 self += shell(commands=[self.ldcache_step(directory=libpath)])
             else:
-                self.__environment_variables[
-                    "LD_LIBRARY_PATH"
-                ] = "{}:$LD_LIBRARY_PATH".format(libpath)
+                self.__environment_variables["LD_LIBRARY_PATH"] = (
+                    "{}:$LD_LIBRARY_PATH".format(libpath)
+                )
 
         self += environment(variables=self.__environment_variables)