diff --git a/manifests/config.pp b/manifests/config.pp
index adb1fcb..8df9fbd 100644
--- a/manifests/config.pp
+++ b/manifests/config.pp
@@ -1,7 +1,7 @@
 # On Debian systems, if alternatives are set, manually assign them.
 class java::config ( ) {
   case $::osfamily {
-    Debian: {
+    'Debian': {
       if $java::use_java_alternative != undef and $java::use_java_alternative_path != undef {
         exec { 'update-java-alternatives':
           path    => '/usr/bin:/usr/sbin:/bin:/sbin',