diff --git a/config/defaults.erb b/config/defaults.erb
index d58e332..b6c1adc 100644
--- a/config/defaults.erb
+++ b/config/defaults.erb
@@ -4,7 +4,7 @@ gluon_branch = "stable"
 gluon_release = "0.9.0"
 
 # Add the +exp and current date if this is an experimental release
-gluon_release += "+exp" + Time.new.strftime("%Y%m%d") if gluon_branch == "experimental"
+gluon_release += "~exp" + Time.new.strftime("%Y%m%d") if gluon_branch == "experimental"
 
 gluon_targets = %w(
 	ar71xx-generic