diff --git a/test_problems/diamondSurf/.cvsignore b/test_problems/diamondSurf/.cvsignore
index 18bdd9629..dd87e46ad 100644
--- a/test_problems/diamondSurf/.cvsignore
+++ b/test_problems/diamondSurf/.cvsignore
@@ -9,3 +9,4 @@ xml_diff_test.out
 .depends
 *.d
 .cttmp.py
+runDiamond.ilk