diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 41104790a1..41fdbf30b1 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -9327,7 +9327,7 @@ virDomainStorageSourceParse(xmlNodePtr node,
 }
 
 
-static int
+int
 virDomainDiskBackingStoreParse(xmlXPathContextPtr ctxt,
                                virStorageSourcePtr src,
                                unsigned int flags,
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 3b248e8091..79d9802373 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -3524,6 +3524,13 @@ int virDomainStorageSourceParse(xmlNodePtr node,
                                 virDomainXMLOptionPtr xmlopt)
     ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3);
 
+int
+virDomainDiskBackingStoreParse(xmlXPathContextPtr ctxt,
+                               virStorageSourcePtr src,
+                               unsigned int flags,
+                               virDomainXMLOptionPtr xmlopt)
+    ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
+
 int virDomainDefGetVcpuPinInfoHelper(virDomainDefPtr def,
                                      int maplen,
                                      int ncpumaps,
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 1479db9402..96ad468b8b 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -311,6 +311,7 @@ virDomainDeviceInfoIterate;
 virDomainDeviceSetData;
 virDomainDeviceTypeToString;
 virDomainDeviceValidateAliasForHotplug;
+virDomainDiskBackingStoreParse;
 virDomainDiskBusTypeToString;
 virDomainDiskByAddress;
 virDomainDiskByName;