diff --git a/scripts/mtest2make.py b/scripts/mtest2make.py
index 179dd54871..eb01a05ddb 100644
--- a/scripts/mtest2make.py
+++ b/scripts/mtest2make.py
@@ -27,7 +27,8 @@ SPEED = quick
 .speed.slow = $(foreach s,$(sort $(filter-out %-thorough, $1)), --suite $s)
 .speed.thorough = $(foreach s,$(sort $1), --suite $s)
 
-.mtestargs = --no-rebuild -t 0
+TIMEOUT_MULTIPLIER = 1
+.mtestargs = --no-rebuild -t $(TIMEOUT_MULTIPLIER)
 ifneq ($(SPEED), quick)
 .mtestargs += --setup $(SPEED)
 endif