diff --git a/process.c b/process.c
index 52b723735b..b4e2b7c94c 100644
--- a/process.c
+++ b/process.c
@@ -2167,15 +2167,15 @@ static int rb_exec_without_timer_thread(const struct rb_exec_arg *e, char *errms
  *  This behavior is modified by env and options.
  *  See <code>spawn</code> for details.
  *
+ *  Raises SystemCallError if the command couldn't execute (typically
+ *  <code>Errno::ENOENT</code> when it was not found).
+ *
  *  This method modifies process attributes according to _options_
  *  (details described in <code>spawn</code>)
  *  before <code>exec(2)</code> system call.
  *  The modified attributes may be retained when <code>exec(2)</code> system call fails.
  *  For example, hard resource limits is not restorable.
- *  If it is not acceptable, consider methods which create a child process such as <code>spawn</code> or <code>system</code>.
- *
- *  Raises SystemCallError if the command couldn't execute (typically
- *  <code>Errno::ENOENT</code> when it was not found).
+ *  If it is not acceptable, consider to create a child process using <code>spawn</code> or <code>system</code>.
  *
  *     exec "echo *"       # echoes list of files in current directory
  *     # never get here