diff --git a/exp-drd/tests/matinv_openmp.vgtest b/exp-drd/tests/matinv_openmp.vgtest
index 4447c6563..cad355c19 100644
--- a/exp-drd/tests/matinv_openmp.vgtest
+++ b/exp-drd/tests/matinv_openmp.vgtest
@@ -1,2 +1,3 @@
+prereq: test -e matinv_openmp
 prog: matinv_openmp
 args: 30 15 1