--- a/sam/sam_test.go
+++ b/sam/sam_test.go
@@ -767,7 +767,6 @@
 	{[]byte("21N"), 21, 0},
 	{[]byte("0M1I1D"), 1, 1},
 	{[]byte("1000000000M"), 1e9, 1e9},
-	{[]byte("1000000000000M"), 1e12, 1e12},
 }
 
 func (s *S) TestLengths(c *check.C) {