diff --git a/novelwriter/core/storage.py b/novelwriter/core/storage.py
index 2b96c21b..6d250e12 100644
--- a/novelwriter/core/storage.py
+++ b/novelwriter/core/storage.py
@@ -480,7 +480,7 @@ class _LegacyStorage:
                             end=f"{bits[2]} {bits[3]}",
                             novel=int(bits[4]),
                             notes=int(bits[5]),
-                            idle=int(bits[6]) if nBits > 6 else -1,
+                            idle=int(bits[6]) if nBits > 6 else 0,
                         ))
 
             with open(sessJson, mode="a+", encoding="utf-8") as fObj:
diff --git a/novelwriter/tools/writingstats.py b/novelwriter/tools/writingstats.py
index 31f91ba7..7d224469 100644
--- a/novelwriter/tools/writingstats.py
+++ b/novelwriter/tools/writingstats.py
@@ -451,9 +451,9 @@ class GuiWritingStats(QDialog):
                 except Exception:
                     logger.error("Invalid session log record")
                     continue
-                wcNovel = checkInt(record.get("novel"), 0)
-                wcNotes = checkInt(record.get("notes"), 0)
-                sIdle = checkInt(record.get("idle"), 0)
+                wcNovel = max(checkInt(record.get("novel"), 0), 0)
+                wcNotes = max(checkInt(record.get("notes"), 0), 0)
+                sIdle = max(checkInt(record.get("idle"), 0), 0)
 
                 tDiff = dEnd - dStart
                 sDiff = tDiff.total_seconds()