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-rw-r--r--complex.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/complex.c b/complex.c
index e3c2013..ec52bea 100644
--- a/complex.c
+++ b/complex.c
@@ -1020,8 +1020,8 @@ nucomp_coerce(VALUE self, VALUE other)
if (RB_TYPE_P(other, T_COMPLEX))
return rb_assoc_new(other, self);
- rb_raise(rb_eTypeError, "%s can't be coerced into %s",
- rb_obj_classname(other), rb_obj_classname(self));
+ rb_raise(rb_eTypeError, "%"PRIsVALUE" can't be coerced into %"PRIsVALUE,
+ rb_obj_class(other), rb_obj_class(self));
return Qnil;
}