diff --git a/tests/long/se/40.perlbmk/test.py b/tests/long/se/40.perlbmk/test.py
index 74c876978..cf29421ba 100644
--- a/tests/long/se/40.perlbmk/test.py
+++ b/tests/long/se/40.perlbmk/test.py
@@ -29,5 +29,5 @@
 m5.util.addToPath('../configs/common')
 from cpu2000 import perlbmk_makerand
 
-workload = perlbmk_makerand(isa, opsys, 'lgred')
+workload = perlbmk_makerand(isa, opsys, 'mdred')
 root.system.cpu[0].workload = workload.makeLiveProcess()