diff --git a/stats.py b/stats.py
index 342423a..026e267 100644
--- a/stats.py
+++ b/stats.py
@@ -179,7 +179,7 @@ def get_retention_graph(self: CollectionStats):
     COUNT(CASE WHEN ease > 1 AND lastIvl < {config.mature_ivl} AND lastIvl > {config.mature_ivl} * -86400 THEN id ELSE NULL END) / (COUNT(CASE WHEN lastIvl < {config.mature_ivl} AND lastIvl > {config.mature_ivl} * -86400 THEN id ELSE NULL END) + 0.0001),
     COUNT(CASE WHEN ease > 1 AND (lastIvl >= {config.mature_ivl} OR lastIvl <= {config.mature_ivl} * -86400) THEN id ELSE NULL END) / (COUNT(CASE WHEN lastIvl >= {config.mature_ivl} OR lastIvl <= {config.mature_ivl} * -86400 THEN id ELSE NULL END) + 0.0001)
     FROM revlog
-    WHERE (type = 1 OR lastIvl <= -86400 OR lastIvl >= 1)
+    WHERE ease >= 1 AND (type = 1 OR lastIvl <= -86400 OR lastIvl >= 1)
     {lim}
     GROUP BY day
     """