diff --git a/tools/lkl/tests/disk-vfio-pci.c b/tools/lkl/tests/disk-vfio-pci.c
index 1b342e1ebb4ddb..7fd95a4543b242 100644
--- a/tools/lkl/tests/disk-vfio-pci.c
+++ b/tools/lkl/tests/disk-vfio-pci.c
@@ -105,7 +105,7 @@ int main(int argc, const char **argv)
 		return -1;
 
 	snprintf(bootparams, sizeof(bootparams),
-		 "mem=32M loglevel=8 lkl_pci=vfio%s", cla.pciname);
+		 "mem=16M loglevel=8 lkl_pci=vfio%s", cla.pciname);
 
 	lkl_host_ops.print = lkl_test_log;