diff --git a/PeakOTron.py b/PeakOTron.py
index cc7b61269dfd2874c108aaf42de34723088e5073..b1d72499d12d503922868d777b2578bcbbeba68f 100644
--- a/PeakOTron.py
+++ b/PeakOTron.py
@@ -60,7 +60,7 @@ class BandWidthOptimiser:
         try:
             x_kde, y_kde = FFTKDE(kernel = self.kernel, bw=bw).fit(self.data).evaluate(self.n_kde_samples)
         
-            loss = -np.sum(np.log(y_kde))
+            loss = -np.nansum(np.log(y_kde))
             
         except: