Fix extra whitespace.
diff --git a/scripts/python-skywater-pdk/generate_verilog_blackbox.py b/scripts/python-skywater-pdk/generate_verilog_blackbox.py
index 4dd09aa..783c900 100755
--- a/scripts/python-skywater-pdk/generate_verilog_blackbox.py
+++ b/scripts/python-skywater-pdk/generate_verilog_blackbox.py
@@ -802,6 +802,7 @@
 
             if i == 0:
                 assert r[-1] == 'Comments', (i, r)
+                seek_backwards(f)
                 f.write('\n')
                 continue
             f.write(' ;')