1 files changed, 3 insertions, 1 deletions

diff --git a/libbb/lineedit.c b/libbb/lineedit.c
index a3d939551..9a773b4b8 100644
--- a/libbb/lineedit.c
+++ b/libbb/lineedit.c
@@ -429,7 +429,9 @@ static void input_delete(int save)
 #endif
 
         memmove(command_ps + j, command_ps + j + 1,
-                        (command_len - j + 1) * sizeof(command_ps[0]));
+                        /* (command_len + 1 [because of NUL]) - (j + 1)
+                         * simplified into (command_len - j) */
+                        (command_len - j) * sizeof(command_ps[0]));
         command_len--;
         input_end();                    /* rewrite new line */
         cmdedit_set_out_char(' ');      /* erase char */