1 files changed, 1 insertions, 0 deletions
diff --git a/bignum.c b/bignum.c
index e709c21c52..6236ff32f7 100644
--- a/bignum.c
+++ b/bignum.c
@@ -3782,6 +3782,7 @@ rb_big_coerce(VALUE x, VALUE y)
 /*
  *  call-seq:
  *     big.abs -> aBignum
+ *     big.magnitude -> aBignum
  *
  *  Returns the absolute value of <i>big</i>.
  *