diff --git a/src/testdir/test_python3.vim b/src/testdir/test_python3.vim
index 2244846..b4a4a4a 100644
--- a/src/testdir/test_python3.vim
+++ b/src/testdir/test_python3.vim
@@ -349,7 +349,10 @@
   python3 << trim
     s+='D'
   .
-  call assert_equal('ABCD', pyxeval('s'))
+  python3 << trim eof
+    s+='E'
+  eof
+  call assert_equal('ABCDE', pyxeval('s'))
 endfunc
 
 " vim: shiftwidth=2 sts=2 expandtab