diff --git a/site-modules/profile/lib/facter/ceph_mgr_modules.rb b/site-modules/profile/lib/facter/ceph_mgr_modules.rb
index 95842b0b..4dd70adb 100644
--- a/site-modules/profile/lib/facter/ceph_mgr_modules.rb
+++ b/site-modules/profile/lib/facter/ceph_mgr_modules.rb
@@ -1,9 +1,14 @@
 require 'json'
 
 Facter.add('ceph_mgr_modules') do
   setcode do
     if File.exist?('/var/lib/ceph/mgr')
-      JSON.parse(Facter::Core::Execution.execute('ceph mgr module ls'))
+      data = Facter::Core::Execution.execute('ceph mgr module ls').strip
+      if data
+        JSON.parse(data)
+      else
+        {}
+      end
     end
   end
 end