diff --git a/src/conf/domain_addr.c b/src/conf/domain_addr.c
index eb0784cd2c..ec2dfdbbdc 100644
--- a/src/conf/domain_addr.c
+++ b/src/conf/domain_addr.c
@@ -386,7 +386,7 @@ virDomainPCIAddressBusIsFullyReserved(virDomainPCIAddressBusPtr bus)
 }
 
 
-bool
+static bool ATTRIBUTE_NONNULL(1)
 virDomainPCIAddressBusIsEmpty(virDomainPCIAddressBusPtr bus)
 {
     size_t i;
diff --git a/src/conf/domain_addr.h b/src/conf/domain_addr.h
index 776399eb63..fc87c14eba 100644
--- a/src/conf/domain_addr.h
+++ b/src/conf/domain_addr.h
@@ -146,9 +146,6 @@ int virDomainPCIAddressBusSetModel(virDomainPCIAddressBusPtr bus,
 bool virDomainPCIAddressBusIsFullyReserved(virDomainPCIAddressBusPtr bus)
     ATTRIBUTE_NONNULL(1);
 
-bool virDomainPCIAddressBusIsEmpty(virDomainPCIAddressBusPtr bus)
-    ATTRIBUTE_NONNULL(1);
-
 bool virDomainPCIAddressSlotInUse(virDomainPCIAddressSetPtr addrs,
                                   virPCIDeviceAddressPtr addr)
     ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);