diff --git a/bilby/bilby_mcmc/sampler.py b/bilby/bilby_mcmc/sampler.py
index 6676c76d37ac89ab912a824c18e0d3b175b785c1..9aeaa731d035619fe58ba82fb6b98150a398e25b 100644
--- a/bilby/bilby_mcmc/sampler.py
+++ b/bilby/bilby_mcmc/sampler.py
@@ -388,7 +388,7 @@ 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