diff --git a/src/testdir/test_increment.vim b/src/testdir/test_increment.vim
index 9b592ed..275969e 100644
--- a/src/testdir/test_increment.vim
+++ b/src/testdir/test_increment.vim
@@ -708,4 +708,23 @@
   call assert_equal([0, 1, 2, 0], getpos('.'))
 endfunc
 
+" Test what patch 7.3.414 fixed. Ctrl-A on "000" drops the leading zeros.
+func Test_normal_increment_01()
+  call setline(1, "000")
+  exec "norm! gg0\<C-A>"
+  call assert_equal("001", getline(1))
+
+  call setline(1, "000")
+  exec "norm! gg$\<C-A>"
+  call assert_equal("001", getline(1))
+
+  call setline(1, "001")
+  exec "norm! gg0\<C-A>"
+  call assert_equal("002", getline(1))
+
+  call setline(1, "001")
+  exec "norm! gg$\<C-A>"
+  call assert_equal("002", getline(1))
+endfunc
+
 " vim: tabstop=2 shiftwidth=2 expandtab