diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 73ef24d66f..1e96089a90 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -354,6 +354,7 @@ virDomainDiskSetDriver;
 virDomainDiskSetFormat;
 virDomainDiskSetSource;
 virDomainDiskSetType;
+virDomainDiskSourceFormat;
 virDomainDiskTranslateSourcePool;
 virDomainFeatureTypeFromString;
 virDomainFeatureTypeToString;