diff --git a/pyFTS/benchmarks/Measures.py b/pyFTS/benchmarks/Measures.py
index f0b2d09..e777362 100644
--- a/pyFTS/benchmarks/Measures.py
+++ b/pyFTS/benchmarks/Measures.py
@@ -231,13 +231,13 @@ def crps(targets, densities):
         l = len(densities.bins)
         n = 1
         Fa = heavyside_cdf(densities.bins, targets)
-        _crps = sum([(densities.cdf(val) - Fa[val][0]) ** 2 for val in densities.bins])
+        _crps = sum([(densities.cummulative(val) - Fa[val][0]) ** 2 for val in densities.bins])
     elif isinstance(densities, list):
         l = len(densities[0].bins)
         n = len(densities)
         Fa = heavyside_cdf(densities[0].bins, targets)
         for df in densities:
-            _crps += sum([(df.cdf(val) - Fa[val][0]) ** 2 for val in df.bins])
+            _crps += sum([(df.cummulative(val) - Fa[val][0]) ** 2 for val in df.bins])
 
     return _crps / float(l * n)