diff --git a/src/pineko/cli/fonll.py b/src/pineko/cli/fonll.py
index 04939362..58d45dfe 100644
--- a/src/pineko/cli/fonll.py
+++ b/src/pineko/cli/fonll.py
@@ -121,7 +121,9 @@ def subcommand(
     tcard = theory_card.load(theoryid)
     if tcard["DAMP"] != 0:
         if not "DAMPPOWERc" in tcard or not "DAMPPOWERb" in tcard:
-            raise InconsistentInputsError("If DAMP is set, set also DAMPPOWERb and DAMPPOWERc")
+            raise InconsistentInputsError(
+                "If DAMP is set, set also DAMPPOWERb and DAMPPOWERc"
+            )
     else:
         tcard["DAMPPOWERb"] = None
         tcard["DAMPPOWERc"] = None
diff --git a/src/pineko/fonll.py b/src/pineko/fonll.py
index 264bdf51..82a07c7f 100644
--- a/src/pineko/fonll.py
+++ b/src/pineko/fonll.py
@@ -120,8 +120,12 @@ def update_fk_theorycard(combined_fk, input_theorycard_path):
 
 def produce_dampings(theorycard_constituent_fks, fonll_info, damppowerc, damppowerb):
     """Return the damping factors for each of the relevant masses."""
-    cmatching2 = (theorycard_constituent_fks["kcThr"] * theorycard_constituent_fks["mc"]) **2
-    bmatching2 = (theorycard_constituent_fks["kbThr"] * theorycard_constituent_fks["mb"]) **2
+    cmatching2 = (
+        theorycard_constituent_fks["kcThr"] * theorycard_constituent_fks["mc"]
+    ) ** 2
+    bmatching2 = (
+        theorycard_constituent_fks["kbThr"] * theorycard_constituent_fks["mb"]
+    ) ** 2
     q2grid = fonll_info.Q2grid
     step_function_charm = cmatching2 < q2grid
     step_function_bottom = bmatching2 < q2grid