diff --git a/src/conf/numa_conf.c b/src/conf/numa_conf.c
index be0c4572c5..dd4997c759 100644
--- a/src/conf/numa_conf.c
+++ b/src/conf/numa_conf.c
@@ -116,7 +116,7 @@ struct _virDomainNuma {
 
 
 bool
-virDomainNumatuneNodeSpecified(virDomainNuma *numatune,
+virDomainNumatuneNodeSpecified(const virDomainNuma *numatune,
                                int cellid)
 {
     if (numatune &&
diff --git a/src/conf/numa_conf.h b/src/conf/numa_conf.h
index bbb928abb2..f5a20315b6 100644
--- a/src/conf/numa_conf.h
+++ b/src/conf/numa_conf.h
@@ -210,7 +210,7 @@ int virDomainNumatuneSpecifiedMaxNode(virDomainNuma *numatune);
 bool virDomainNumatuneNodesetIsAvailable(virDomainNuma *numatune,
                                          virBitmap *auto_nodeset);
 
-bool virDomainNumatuneNodeSpecified(virDomainNuma *numatune,
+bool virDomainNumatuneNodeSpecified(const virDomainNuma *numatune,
                                     int cellid);
 
 int virDomainNumaDefParseXML(virDomainNuma *def, xmlXPathContextPtr ctxt);