diff --git a/src/ria_toolkit_oss_cli/ria_toolkit_oss/annotate.py b/src/ria_toolkit_oss_cli/ria_toolkit_oss/annotate.py
index d551d2c..d8024eb 100644
--- a/src/ria_toolkit_oss_cli/ria_toolkit_oss/annotate.py
+++ b/src/ria_toolkit_oss_cli/ria_toolkit_oss/annotate.py
@@ -782,7 +782,8 @@ def threshold(input, threshold, label, window_size, annotation_type, channel, sa
 @click.option("--overwrite", is_flag=True, help="Overwrite input file (non-SigMF only)")
 @click.option("--quiet", is_flag=True, help="Quiet mode")
 @click.option("--verbose", is_flag=True, help="Verbose output (show detected components)")
-def separate(input, indices, nfft, noise_threshold_db, min_component_bw, sample_rate, output, overwrite, quiet, verbose):
+def separate(
+        input, indices, nfft, noise_threshold_db, min_component_bw, sample_rate, output, overwrite, quiet, verbose):
     """
     Auto-detect parallel frequency-offset signals and split into sub-bands.