diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index a6c95b7208ef32277f0f32d12af45a7033f0ee25..b257db44b0ca95763b3815dadc5da47d9d2548b0 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -15441,16 +15441,24 @@ qemuDomainDiskIsMissingLocalOptional(virDomainDiskDefPtr disk)
 }
 
 
+int
+qemuDomainNVRAMPathFormat(virQEMUDriverConfigPtr cfg,
+                            virDomainDefPtr def,
+                            char **path)
+{
+    return virAsprintf(path, "%s/%s_VARS.fd", cfg->nvramDir, def->name);
+}
+
+
 int
 qemuDomainNVRAMPathGenerate(virQEMUDriverConfigPtr cfg,
                             virDomainDefPtr def)
 {
     if (def->os.loader &&
         def->os.loader->type == VIR_DOMAIN_LOADER_TYPE_PFLASH &&
-        def->os.loader->readonly == VIR_TRISTATE_SWITCH_ON &&
+        def->os.loader->readonly == VIR_TRISTATE_BOOL_YES &&
         !def->os.loader->nvram) {
-        return virAsprintf(&def->os.loader->nvram, "%s/%s_VARS.fd",
-                           cfg->nvramDir, def->name);
+        return qemuDomainNVRAMPathFormat(cfg, def, &def->os.loader->nvram);
     }
 
     return 0;
diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h
index 282ab2c3eccb8c7d3f92fdcf0051395b81bf6a22..9174631ad24ed249a298133c807177901fb5ec27 100644
--- a/src/qemu/qemu_domain.h
+++ b/src/qemu/qemu_domain.h
@@ -1207,6 +1207,11 @@ qemuDomainIsUsingNoShutdown(qemuDomainObjPrivatePtr priv);
 bool
 qemuDomainDiskIsMissingLocalOptional(virDomainDiskDefPtr disk);
 
+int
+qemuDomainNVRAMPathFormat(virQEMUDriverConfigPtr cfg,
+                            virDomainDefPtr def,
+                            char **path);
+
 int
 qemuDomainNVRAMPathGenerate(virQEMUDriverConfigPtr cfg,
                             virDomainDefPtr def);
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 681b26814b94ec5f7953ab85e71764a47815388a..42866c6060db7fc9258faee958db4d7aa09f8733 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -7828,6 +7828,7 @@ qemuDomainUndefineFlags(virDomainPtr dom,
     int nsnapshots;
     int ncheckpoints;
     virQEMUDriverConfigPtr cfg = NULL;
+    g_autofree char *nvram_path = NULL;
 
     virCheckFlags(VIR_DOMAIN_UNDEFINE_MANAGED_SAVE |
                   VIR_DOMAIN_UNDEFINE_SNAPSHOTS_METADATA |
@@ -7905,14 +7906,21 @@ qemuDomainUndefineFlags(virDomainPtr dom,
         }
     }
 
-    if (vm->def->os.loader &&
-        vm->def->os.loader->nvram &&
-        virFileExists(vm->def->os.loader->nvram)) {
+    if (vm->def->os.firmware == VIR_DOMAIN_OS_DEF_FIRMWARE_EFI) {
+        if (qemuDomainNVRAMPathFormat(cfg, vm->def, &nvram_path) < 0)
+            goto endjob;
+    } else {
+        if (vm->def->os.loader &&
+            VIR_STRDUP(nvram_path, vm->def->os.loader->nvram) < 0)
+            goto endjob;
+    }
+
+    if (nvram_path && virFileExists(nvram_path)) {
         if ((flags & VIR_DOMAIN_UNDEFINE_NVRAM)) {
-            if (unlink(vm->def->os.loader->nvram) < 0) {
+            if (unlink(nvram_path) < 0) {
                 virReportSystemError(errno,
                                      _("failed to remove nvram: %s"),
-                                     vm->def->os.loader->nvram);
+                                     nvram_path);
                 goto endjob;
             }
         } else if (!(flags & VIR_DOMAIN_UNDEFINE_KEEP_NVRAM)) {