diff --git a/bilby/bilby_mcmc/sampler.py b/bilby/bilby_mcmc/sampler.py
index fcd4c9c5aa82d02334b1ffe02e5fbe501d4e14b8..453584270ab530fc2254800863e410146da5e73c 100644
--- a/bilby/bilby_mcmc/sampler.py
+++ b/bilby/bilby_mcmc/sampler.py
@@ -382,7 +382,7 @@ class Bilby_MCMC(MCMCSampler):
             If true, resume file was successfully loaded, otherwise false
 
         """
-        if os.path.isfile(self.resume_file) is False:
+        if os.path.isfile(self.resume_file) is False or not os.path.getsize(self.resume_file):
             return False
         import dill