diff --git a/lib/facter/java_default_home.rb b/lib/facter/java_default_home.rb
index 9a70934..330f037 100644
--- a/lib/facter/java_default_home.rb
+++ b/lib/facter/java_default_home.rb
@@ -15,7 +15,9 @@ Facter.add(:java_default_home) do
   setcode do
     if Facter::Util::Resolution.which('readlink')
       java_bin = Facter::Util::Resolution.exec('readlink -e /usr/bin/java').strip
-      if java_bin =~ %r(/jre/)
+      if java_bin.empty?
+        nil
+      elsif java_bin =~ %r(/jre/)
         java_default_home = File.dirname(File.dirname(File.dirname(java_bin)))
       else
         java_default_home = File.dirname(File.dirname(java_bin))