diff --git a/test/ConstantsDemo.thrift b/test/ConstantsDemo.thrift
index 9a71ac8..0e3c1d9 100644
--- a/test/ConstantsDemo.thrift
+++ b/test/ConstantsDemo.thrift
@@ -47,6 +47,8 @@
 const double GEn_DU = 085.2355
 const string GEN_STRING = "asldkjasfd"
 
+const double e10 = 1e10   // fails with 0.9.3 and earlier
+
 const map<i32,i32> GEN_MAP = { 35532 : 233, 43523 : 853 }
 const list<i32> GEN_LIST = [ 235235, 23598352, 3253523 ]