diff --git a/_version.py b/_version.py
index 73a2e28c..8508c460 100644
--- a/_version.py
+++ b/_version.py
@@ -1,2 +1,2 @@
-__version__ = "1.0.2"
+__version__ = "1.0.3"
 
diff --git a/trackers/rf_bucket.py b/trackers/rf_bucket.py
index f9fb5a77..2e445c2c 100644
--- a/trackers/rf_bucket.py
+++ b/trackers/rf_bucket.py
@@ -266,7 +266,8 @@ def is_in_separatrix(self, z, dp):
         Returns boolean whether this coordinate is located
         strictly inside the separatrix.
         """
-        return np.logical_and(np.logical_and(self.zleft < z, z < self.zright), self.hamiltonian(z, dp) > 0)
+        return np.logical_and(np.logical_and(self.zleft < z, z < self.zright),
+                              self.hamiltonian(z, dp) > 0.01 * self.Hmax)
 
     def bucket_area(self):
         xmin, xmax = self.zleft, self.zright