diff --git a/tests/genericxml2xmlindata/cachetune-extra-tunes.xml b/tests/genericxml2xmlindata/cachetune-extra-tunes.xml
new file mode 100644
index 0000000000000000000000000000000000000000..d3b01a8ecdbf65e11b1359c42bbecd2fb7db9668
--- /dev/null
+++ b/tests/genericxml2xmlindata/cachetune-extra-tunes.xml
@@ -0,0 +1,33 @@
+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>219136</memory>
+  <currentMemory unit='KiB'>219136</currentMemory>
+  <vcpu placement='static'>2</vcpu>
+  <cputune>
+    <cachetune vcpus='0-3'>
+      <cache id='0' level='3' type='code' size='7680' unit='KiB'/>
+      <cache id='1' level='3' type='data' size='3840' unit='KiB'/>
+    </cachetune>
+    <cachetune vcpus='100'>
+      <cache id='1' level='3' type='code' size='6' unit='MiB'/>
+    </cachetune>
+  </cputune>
+  <os>
+    <type arch='i686' machine='pc'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-i686</emulator>
+    <controller type='usb' index='0'/>
+    <controller type='ide' index='0'/>
+    <controller type='pci' index='0' model='pci-root'/>
+    <input type='mouse' bus='ps2'/>
+    <input type='keyboard' bus='ps2'/>
+    <memballoon model='virtio'/>
+  </devices>
+</domain>
diff --git a/tests/genericxml2xmloutdata/cachetune-extra-tunes.xml b/tests/genericxml2xmloutdata/cachetune-extra-tunes.xml
new file mode 100644
index 0000000000000000000000000000000000000000..db85af08da25cef579b422daf479ab19706c1cfd
--- /dev/null
+++ b/tests/genericxml2xmloutdata/cachetune-extra-tunes.xml
@@ -0,0 +1,30 @@
+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>219136</memory>
+  <currentMemory unit='KiB'>219136</currentMemory>
+  <vcpu placement='static'>2</vcpu>
+  <cputune>
+    <cachetune vcpus='0-1'>
+      <cache id='0' level='3' type='code' size='7680' unit='KiB'/>
+      <cache id='1' level='3' type='data' size='3840' unit='KiB'/>
+    </cachetune>
+  </cputune>
+  <os>
+    <type arch='i686' machine='pc'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-i686</emulator>
+    <controller type='usb' index='0'/>
+    <controller type='ide' index='0'/>
+    <controller type='pci' index='0' model='pci-root'/>
+    <input type='mouse' bus='ps2'/>
+    <input type='keyboard' bus='ps2'/>
+    <memballoon model='virtio'/>
+  </devices>
+</domain>
diff --git a/tests/genericxml2xmltest.c b/tests/genericxml2xmltest.c
index 496e9260fa86684a754ada1d3df3fe35f239a313..c33fce1922370484ee43bdacd3451d53ca2ead72 100644
--- a/tests/genericxml2xmltest.c
+++ b/tests/genericxml2xmltest.c
@@ -133,6 +133,7 @@ mymain(void)
     DO_TEST("cachetune");
     DO_TEST("cachetune-small");
     DO_TEST("cachetune-cdp");
+    DO_TEST_DIFFERENT("cachetune-extra-tunes");
     DO_TEST_FULL("cachetune-colliding-allocs", false, true,
                  TEST_COMPARE_DOM_XML2XML_RESULT_FAIL_PARSE);
     DO_TEST_FULL("cachetune-colliding-tunes", false, true,