diff --git a/src/pystencils/kernelcreation.py b/src/pystencils/kernelcreation.py
index 1d053d1b5c346f3feab87ac1676c57175518e396..60500911917e08db1e9dd9aba0f0b20a4e4f3d8d 100644
--- a/src/pystencils/kernelcreation.py
+++ b/src/pystencils/kernelcreation.py
@@ -54,7 +54,8 @@ def create_kernel(
     """
 
     ctx = KernelCreationContext(
-        default_dtype=create_numeric_type(config.default_dtype), index_dtype=config.index_dtype
+        default_dtype=create_numeric_type(config.default_dtype),
+        index_dtype=config.index_dtype,
     )
 
     if isinstance(assignments, Assignment):
@@ -154,4 +155,3 @@ def create_kernel_function(
     )
     kfunc.metadata.update(ctx.metadata)
     return kfunc
-