diff --git a/tests/basictest.cpp b/tests/basictest.cpp
index 66ba9c6..e29ecd4 100644
--- a/tests/basictest.cpp
+++ b/tests/basictest.cpp
@@ -295,6 +295,7 @@ TEST_CASE("64bit.inf") {
 
 TEST_CASE("64bit.general") {
   verify("9007199254740993.0", 0x1p+53);
+  verify("860228122.6654514319E+90", 0x1.92bb20990715fp+328);
   verify(append_zeros("9007199254740993.0",1000), 0x1p+53);
   verify("10000000000000000000", 0x1.158e460913dp+63);
   verify("10000000000000000000000000000001000000000000", 0x1.cb2d6f618c879p+142);