1 files changed, 1 insertions, 0 deletions
diff --git a/TODO b/TODO
index 2712719..a49c6aa 100644
--- a/TODO
+++ b/TODO
@@ -40,3 +40,4 @@
 - add a time limit for the fit
 - multi-particle fit
 - optimize CHARGE_FRACTION
+- find out why likelihood is sometimes returning nan