1 files changed, 1 insertions, 1 deletions
diff --git a/eval.c b/eval.c
index 1a31db425d..197f6a662b 100644
--- a/eval.c
+++ b/eval.c
@@ -3530,7 +3530,7 @@ rb_yield_0(val, self, klass, acheck)
 	ruby_dyna_vars = block->dyna_vars;
     }
     ruby_class = klass?klass:block->klass;
-    if (!self) self = block->self;
+    if (!klass) self = block->self;
     node = block->body;
 
     if (block->var) {