diff --git a/src/testdir/test_debugger.vim b/src/testdir/test_debugger.vim
index 17d3616..b748a00 100644
--- a/src/testdir/test_debugger.vim
+++ b/src/testdir/test_debugger.vim
@@ -408,7 +408,7 @@
 
   # Start Vim in a terminal
   var buf = g:RunVimInTerminal('-S Xtest.vim', {wait_for_ruler: 0})
-  call g:TermWait(buf)
+  call g:TermWait(buf, g:RunningWithValgrind() ? 1000 : 50)
 
   # Despite the failure the functions are defined
   g:RunDbgCmd(buf, ':function g:EarlyFunc',
@@ -434,7 +434,7 @@
 
   # Start Vim in a terminal
   var buf = g:RunVimInTerminal('-S Xtest.vim', {wait_for_ruler: 0})
-  call g:TermWait(buf)
+  call g:TermWait(buf, g:RunningWithValgrind() ? 1000 : 50)
 
   g:RunDbgCmd(buf, ':call GetNum()',
      ['line 1: return 1  + 2  + 3'], {match: 'pattern'})