diff --git a/src/cgr_gwas_qc/workflow/scripts/qc_report_table.py b/src/cgr_gwas_qc/workflow/scripts/qc_report_table.py
index ce347919..39d6b1e8 100644
--- a/src/cgr_gwas_qc/workflow/scripts/qc_report_table.py
+++ b/src/cgr_gwas_qc/workflow/scripts/qc_report_table.py
@@ -214,7 +214,7 @@ def _subject_qc(sample_sheet_csv: PathLike, sample_qc_csv: PathLike) -> pd.DataF
     "GD4",
     "F(%)",
     "E(%)",
-    "A(%)"
+    "A(%)",
 ]
 
 
@@ -230,10 +230,7 @@ def _ancestry(sample_qc_csv: PathLike, graf_txt: PathLike) -> pd.DataFrame:
         axis=1,
     )
 
-    graf = (
-        pd.read_csv(graf_txt, sep="\t", skiprows=7)
-        .rename({"Sample": "Sample_ID"}, axis=1)
-    )
+    graf = pd.read_csv(graf_txt, sep="\t", skiprows=7).rename({"Sample": "Sample_ID"}, axis=1)
 
     return (
         graf.merge(sample_qc, on="Sample_ID")
diff --git a/src/cgr_gwas_qc/workflow/scripts/subject_qc_table.py b/src/cgr_gwas_qc/workflow/scripts/subject_qc_table.py
index b40a1d58..b41693f1 100644
--- a/src/cgr_gwas_qc/workflow/scripts/subject_qc_table.py
+++ b/src/cgr_gwas_qc/workflow/scripts/subject_qc_table.py
@@ -90,12 +90,10 @@ def main(
     )
 
 
-#Needed with graf-pop implementarion that returns Asian-Pacific_Islander which the hyphen isn't supported by snakemake wildcares
+# Needed with graf-pop implementarion that returns Asian-Pacific_Islander which the hyphen isn't supported by snakemake wildcares
 def _fix_hyphen_in_ancestry_name(df: pd.DataFrame) -> pd.DataFrame:
-    df['Ancestry'] = df['Ancestry'].str.replace('-', '_')
-    return (
-        df
-    )
+    df["Ancestry"] = df["Ancestry"].str.replace("-", "_")
+    return df
 
 
 def _sample_qc_to_subject_qc(df: pd.DataFrame) -> pd.DataFrame: