diff --git a/manifests/init.pp b/manifests/init.pp
index f3ae555..f8dd0a2 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -17,8 +17,11 @@ class java(
   $version='1.6.0_25-fcs'
 ) {
 
-  validate_re($jre, [ '^true$', '^false$' ])
-  validate_re($jdk, [ '^true$', '^false$' ])
+  # Cannot pass anonymous arrays to functions in 2.6.8
+  $v_true_false = [ '^true$', '^false$' ]
+  # Must compare string values, not booleans.
+  validate_re("$jre", $v_true_false)
+  validate_re("$jdk", $v_true_false)
   validate_re($version, '^[._0-9a-zA-Z:-]+$')
 
   $jre_real     = $jre