diff --git a/wally-pipelined/regression/sim-buildroot b/wally-pipelined/regression/sim-buildroot
index 04c9919cd..8814ca6f3 100755
--- a/wally-pipelined/regression/sim-buildroot
+++ b/wally-pipelined/regression/sim-buildroot
@@ -30,4 +30,4 @@ echo "INSTR_LIMIT  = ${INSTR_LIMIT}"
 echo "INSTR_WAVEON = ${INSTR_WAVEON}"
 echo "CHECKPOINT   = ${CHECKPOINT}"
 
-vsim -do wally-buildroot.do $INSTR_LIMIT $INSTR_WAVEON $CHECKPOINT
+vsim -do "do ./wally-buildroot.do $INSTR_LIMIT $INSTR_WAVEON $CHECKPOINT"