diff --git a/cosmosis/samplers/nautilus/nautilus_sampler.py b/cosmosis/samplers/nautilus/nautilus_sampler.py
index 2318e043..3ebb9880 100644
--- a/cosmosis/samplers/nautilus/nautilus_sampler.py
+++ b/cosmosis/samplers/nautilus/nautilus_sampler.py
@@ -100,15 +100,22 @@ def execute(self):
                     verbose=self.verbose)
 
         results = sampler.posterior(return_blobs=True)
-        posts = results[2] + results[3][:, 0]
+        if isinstance(results[3][0], float):
+            priors = results[3]
+        else:
+            priors = np.array([r[0] for r in results[3]])
+
+        posts = results[2] + priors
         self.distribution_hints.set_from_sample(results[0], posts, log_weights=results[1])
 
         for sample, logwt, logl, blob in zip(*results):
-            blob = np.atleast_1d(blob)
-            prior = blob[0]
-            extra = blob[1:]
-            logp = logl + prior
-            self.output.parameters(sample, extra, logwt, prior, logp)
+            if isinstance(blob, float):
+                prior = blob
+                self.output.parameters(sample, logwt, prior, logl + prior)
+            else:
+                prior = blob[0]
+                extra = list(blob)[1:]
+                self.output.parameters(sample, extra, logwt, prior, logl + prior)
 
         self.output.final("efficiency", sampler.n_eff / sampler.n_like)
         self.output.final("neff", sampler.n_eff)