diff --git a/start_qemu/start.sh b/start_qemu/start.sh
index 5c4ad8c..a9f08c2 100644
--- a/start_qemu/start.sh
+++ b/start_qemu/start.sh
@@ -18,7 +18,7 @@ function createQcow2 {
 function checkQcow2 { if [ ! -f "$dir/$hda" ]; then createQcow2; fi }
 
 function bootCD {
-  qemu-system-x86_64 -enable-kvm -m $mem -cpu host -smp cpus=$nCores -machine type=pc,accel=kvm -boot d -cdrom $iso -hda $hda
+  qemu-system-x86_64 -enable-kvm -m $mem -cpu host -smp cpus=$nCores -machine type=pc,accel=kvm -boot d -cdrom "$iso" -hda $hda
 }
 
 function bootHD {