diff --git a/ci/basop-pages/create_report_pages.py b/ci/basop-pages/create_report_pages.py
index af937355ef4054fbf24561bf0aee9aa0285ee776..cf3a3a6472347271149589643cb7275ddf4ee7f3 100644
--- a/ci/basop-pages/create_report_pages.py
+++ b/ci/basop-pages/create_report_pages.py
@@ -199,11 +199,15 @@ def tr_from_row(row, id_current, id_previous):
                 if float(curr) > float(prev):
                     curr += f" {ARROW_UP}"
                     # increase is bad -> mark in red, execpt for SNR for which it is good -> mark in green
-                    td_tmpl_curr = TD_TMPL_REDUCE if c == "MIN_SSNR" else TD_TMPL_INCREASE
+                    td_tmpl_curr = (
+                        TD_TMPL_REDUCE if c == "MIN_SSNR" else TD_TMPL_INCREASE
+                    )
                 elif float(curr) < float(prev):
                     curr += f" {ARROW_DOWN}"
                     # reduce is good -> mark in green, execpt for SNR for which it is bad -> mark in red
-                    td_tmpl_curr = TD_TMPL_INCREASE if c == "MIN_SSNR" else TD_TMPL_REDUCE
+                    td_tmpl_curr = (
+                        TD_TMPL_INCREASE if c == "MIN_SSNR" else TD_TMPL_REDUCE
+                    )
             except ValueError:
                 # if we land here, one of the cells is not a number, this indicates a crash
                 # or some error in the scripts, so mark with red as well
@@ -295,22 +299,25 @@ def merge_tables(tbl1, tbl2, suffix1, suffix2, merge_key, other_keys):
         for key in other_keys:
             new_row[f"{key}-{suffix1}"] = row1[key]
 
+        found_merge_key_in_both_tbls = False
         for row2 in tbl2:
             if row1[merge_key] == row2[merge_key]:
                 new_row[merge_key] = row1[merge_key]
                 for key in other_keys:
-                    if key in row2: # In case key is missing, just insert a blank
+                    if key in row2:  # In case key is missing, just insert a blank
                         new_row[f"{key}-{suffix2}"] = row2[key]
                     else:
                         new_row[f"{key}-{suffix2}"] = ""
+
+                found_merge_key_in_both_tbls = True
                 break
 
-        merged.append(new_row)
+        if found_merge_key_in_both_tbls:
+            merged.append(new_row)
 
     return merged
 
 
-
 if __name__ == "__main__":
     parser = argparse.ArgumentParser()
     parser.add_argument("html_out")