diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index 677b06fb41c193c047ae59ac619acaf8adea8c25..c081e840062d2fbafea41ea5410d6d6fa9905e7c 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -2184,8 +2184,7 @@ bool virQEMUCapsHasPCIMultiBus(virQEMUCapsPtr qemuCaps,
         /* If 'virt' supports PCI, it supports multibus.
          * No extra conditions here for simplicity.
          */
-        if (STREQ(def->os.machine, "virt") ||
-            STRPREFIX(def->os.machine, "virt-"))
+        if (qemuDomainMachineIsVirt(def))
             return true;
     }
 
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index bd564db5bd9533bb21748d76fae3430f90e60d83..bcc0e63b4e4c7bce8a052b1afb862e8ff2138a51 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -6807,8 +6807,7 @@ qemuBuildMachineCommandLine(virCommandPtr cmd,
             if (def->gic_version != VIR_GIC_VERSION_NONE) {
                 if ((def->os.arch != VIR_ARCH_ARMV7L &&
                      def->os.arch != VIR_ARCH_AARCH64) ||
-                    (STRNEQ(def->os.machine, "virt") &&
-                     !STRPREFIX(def->os.machine, "virt-"))) {
+                    !qemuDomainMachineIsVirt(def)) {
                     virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                                    _("gic-version option is available "
                                      "only for ARM virt machine"));
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 95193348812540840ba3d0de96d247b0dcb69599..53682c1bf32f0e4a6e5268525f9d56a63725631d 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -1761,10 +1761,8 @@ qemuDomainDefAddDefaultDevices(virDomainDefPtr def,
     case VIR_ARCH_AARCH64:
         addDefaultUSB = false;
         addDefaultMemballoon = false;
-        if (STREQ(def->os.machine, "virt") ||
-            STRPREFIX(def->os.machine, "virt-")) {
+        if (qemuDomainMachineIsVirt(def))
             addPCIeRoot = virQEMUCapsGet(qemuCaps, QEMU_CAPS_OBJECT_GPEX);
-        }
         break;
 
     case VIR_ARCH_PPC64:
@@ -1906,8 +1904,7 @@ qemuDomainDefEnableDefaultFeatures(virDomainDefPtr def)
     switch (def->os.arch) {
     case VIR_ARCH_ARMV7L:
     case VIR_ARCH_AARCH64:
-        if (STREQ(def->os.machine, "virt") ||
-            STRPREFIX(def->os.machine, "virt-")) {
+        if (qemuDomainMachineIsVirt(def)) {
             /* GIC is always available to ARM virt machines */
             def->features[VIR_DOMAIN_FEATURE_GIC] = VIR_TRISTATE_SWITCH_ON;
         }
@@ -2039,8 +2036,7 @@ qemuDomainDefaultNetModel(const virDomainDef *def,
         if (STREQ(def->os.machine, "versatilepb"))
             return "smc91c111";
 
-        if (STREQ(def->os.machine, "virt") ||
-            STRPREFIX(def->os.machine, "virt-"))
+        if (qemuDomainMachineIsVirt(def))
             return "virtio";
 
         /* Incomplete. vexpress (and a few others) use this, but not all
@@ -4653,6 +4649,14 @@ qemuDomainMachineIsS390CCW(const virDomainDef *def)
 }
 
 
+bool
+qemuDomainMachineIsVirt(const virDomainDef *def)
+{
+    return STREQ(def->os.machine, "virt") ||
+           STRPREFIX(def->os.machine, "virt-");
+}
+
+
 static bool
 qemuCheckMemoryDimmConflict(const virDomainDef *def,
                             const virDomainMemoryDef *mem)
diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h
index 63f98ba7cfe603ba85941abee0756046fbf427f5..95f821c493673bd7c0ee58cc351b3ba037556746 100644
--- a/src/qemu/qemu_domain.h
+++ b/src/qemu/qemu_domain.h
@@ -584,6 +584,7 @@ bool qemuDomainMachineIsQ35(const virDomainDef *def);
 bool qemuDomainMachineIsI440FX(const virDomainDef *def);
 bool qemuDomainMachineNeedsFDC(const virDomainDef *def);
 bool qemuDomainMachineIsS390CCW(const virDomainDef *def);
+bool qemuDomainMachineIsVirt(const virDomainDef *def);
 bool qemuDomainMachineHasBuiltinIDE(const virDomainDef *def);
 
 int qemuDomainUpdateCurrentMemorySize(virQEMUDriverPtr driver,
diff --git a/src/qemu/qemu_domain_address.c b/src/qemu/qemu_domain_address.c
index b3220a52634bb92d25d9742b1aa29f5bab2f85e2..9c8c262cc8b61b8376553ea25b513b0d58bdf06a 100644
--- a/src/qemu/qemu_domain_address.c
+++ b/src/qemu/qemu_domain_address.c
@@ -407,8 +407,7 @@ qemuDomainAssignARMVirtioMMIOAddresses(virDomainDefPtr def,
         return;
 
     if (!(STRPREFIX(def->os.machine, "vexpress-") ||
-          STREQ(def->os.machine, "virt") ||
-          STRPREFIX(def->os.machine, "virt-")))
+          qemuDomainMachineIsVirt(def)))
         return;
 
     if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_VIRTIO_MMIO)) {
@@ -1342,8 +1341,7 @@ qemuDomainSupportsPCI(virDomainDefPtr def,
     if (STREQ(def->os.machine, "versatilepb"))
         return true;
 
-    if ((STREQ(def->os.machine, "virt") ||
-         STRPREFIX(def->os.machine, "virt-")) &&
+    if (qemuDomainMachineIsVirt(def) &&
         virQEMUCapsGet(qemuCaps, QEMU_CAPS_OBJECT_GPEX))
         return true;