diff --git a/modules/local/motifs/transfac_to_psem/main.nf b/modules/local/motifs/transfac_to_psem/main.nf
index 9254f4a..6e16fb1 100644
--- a/modules/local/motifs/transfac_to_psem/main.nf
+++ b/modules/local/motifs/transfac_to_psem/main.nf
@@ -1,7 +1,7 @@
 process TRANSFAC_TO_PSEM {
     tag "$meta.id"
     label "process_single"
-    
+
     conda "conda-forge::pandas==1.5.2"
     container "${ workflow.containerEngine == 'singularity' && !task.ext.singularity_pull_docker_container ?
         'https://depot.galaxyproject.org/singularity/pandas:1.5.2':
diff --git a/modules/local/motifs/transfac_to_psem/templates/convert.py b/modules/local/motifs/transfac_to_psem/templates/convert.py
index 369ab43..95beb2a 100644
--- a/modules/local/motifs/transfac_to_psem/templates/convert.py
+++ b/modules/local/motifs/transfac_to_psem/templates/convert.py
@@ -55,7 +55,7 @@ def write_pwm(f, matrix, name, ma_id):
                     np.log((other / other_content) * (active_content / matrix[:, i])) / lamda,
                     np.log(active / matrix[:, i]) / lamda
                 )
-    
+
     lnR0 = len(matrix) * slope + intercept
 
     decimals = 6
diff --git a/nextflow.config b/nextflow.config
index 263709b..aa1d180 100644
--- a/nextflow.config
+++ b/nextflow.config
@@ -40,6 +40,7 @@ params {
 
     // References
     genome                     = null
+    motifs                     = null
     igenomes_base              = 's3://ngi-igenomes/igenomes/'
     igenomes_ignore            = false
     multiqc_config             = null