1 files changed, 1 insertions, 0 deletions
diff --git a/error.c b/error.c
index 64e5183cca..98a77ce68e 100644
--- a/error.c
+++ b/error.c
@@ -290,6 +290,7 @@ exc_exception(argc, argv, self)
 {
     VALUE etype, exc;
 
+    if (argc == 0) return self;
     if (argc == 1 && self == argv[0]) return self;
     etype = CLASS_OF(self);
     while (FL_TEST(etype, FL_SINGLETON)) {