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-rw-r--r--ext/psych/psych_emitter.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/ext/psych/psych_emitter.c b/ext/psych/psych_emitter.c
index 55bd417004..022ffa0946 100644
--- a/ext/psych/psych_emitter.c
+++ b/ext/psych/psych_emitter.c
@@ -521,6 +521,7 @@ static VALUE set_line_width(VALUE self, VALUE width)
void Init_psych_emitter(void)
{
+#undef rb_intern
VALUE psych = rb_define_module("Psych");
VALUE handler = rb_define_class_under(psych, "Handler", rb_cObject);
cPsychEmitter = rb_define_class_under(psych, "Emitter", handler);