diff --git a/src/testdir/test_debugger.vim b/src/testdir/test_debugger.vim
index 4c3d672..4528b2b 100644
--- a/src/testdir/test_debugger.vim
+++ b/src/testdir/test_debugger.vim
@@ -22,7 +22,7 @@
 " Debugger tests
 func Test_Debugger()
   if !CanRunVimInTerminal()
-    return
+    throw 'Skipped: cannot run Vim in a terminal window'
   endif
 
   " Create a Vim script with some functions