diff --git a/src/testdir/test_lambda.vim b/src/testdir/test_lambda.vim
index b43ef52..aa73462 100644
--- a/src/testdir/test_lambda.vim
+++ b/src/testdir/test_lambda.vim
@@ -308,7 +308,7 @@
 
 func Test_lambda_error()
   " This was causing a crash
-  call assert_fails('ec{@{->{d->()()', 'E15')
+  call assert_fails('ec{@{->{d->()()', 'E15:')
 endfunc
 
 func Test_closure_error()