diff --git a/fuzzers/007-timing/projects/generate.sh b/fuzzers/007-timing/projects/generate.sh
index 16f99e3f..a43fadcf 100644
--- a/fuzzers/007-timing/projects/generate.sh
+++ b/fuzzers/007-timing/projects/generate.sh
@@ -9,5 +9,8 @@ timing_txt2csv () {
 
     python3 $TIMFUZ_DIR/timing_txt2scsv.py --speed-json $TIMFUZ_DIR/speed/build/speed.json --out timing4s.csv.tmp timing4.txt
     mv timing4s.csv.tmp timing4s.csv
+
+    # delete really large file, see https://github.com/SymbiFlow/prjxray/issues/137
+    rm timing4.txt
 }
 
diff --git a/fuzzers/007-timing/timfuz.py b/fuzzers/007-timing/timfuz.py
index ba5822e7..d380e525 100644
--- a/fuzzers/007-timing/timfuz.py
+++ b/fuzzers/007-timing/timfuz.py
@@ -810,7 +810,15 @@ def tilej_stats(tilej):
             'wires_solved': {},
         }
         for corneri in corner_s2i.values():
-            ret['wires_solved'][corneri] = sum([sum([1 if site_wire[corneri] else 0 for site_wire in sitej.values()]) for sitej in sitesj.values()])
+            ret['wires_solved'][corneri] = sum(
+                [
+                    sum(
+                        [
+                            1 if site_wire[corneri] else 0
+                            for site_wire in sitej.values()
+                        ])
+                    for sitej in sitesj.values()
+                ])
         return ret
 
     tstats = tile_stats()
@@ -826,8 +834,9 @@ def tilej_stats(tilej):
                 '  %s: %u / %u solved, %u / %u covered' %
                 (etype, solved, net, covered, net))
         print(
-            '  sites: %u sites w/ %u solved / %u covered site wires' %
-            (sstats['sites'], sstats['wires_solved'][corneri], sstats['wires']))
+            '  sites: %u sites w/ %u solved / %u covered site wires' % (
+                sstats['sites'], sstats['wires_solved'][corneri],
+                sstats['wires']))
 
 
 def load_bounds(bounds_csv, corner):