diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 60336947b5..f3b02d3438 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -11104,7 +11104,7 @@ qemuBuildHotpluggableCPUProps(const virDomainVcpuDef *vcpu)
  * Prepare qemuBlockStorageSourceAttachData *for use with the old approach
  * using -drive/drive_add. See qemuBlockStorageSourceAttachPrepareBlockdev.
  */
-qemuBlockStorageSourceAttachData *
+static qemuBlockStorageSourceAttachData *
 qemuBuildStorageSourceAttachPrepareDrive(virDomainDiskDef *disk,
                                          virQEMUCaps *qemuCaps)
 {
@@ -11127,7 +11127,7 @@ qemuBuildStorageSourceAttachPrepareDrive(virDomainDiskDef *disk,
  * Prepare qemuBlockStorageSourceAttachData *for vhost-user disk
  * to be used with -chardev.
  */
-qemuBlockStorageSourceAttachData *
+static qemuBlockStorageSourceAttachData *
 qemuBuildStorageSourceAttachPrepareChardev(virDomainDiskDef *disk)
 {
     g_autoptr(qemuBlockStorageSourceAttachData) data = NULL;
diff --git a/src/qemu/qemu_command.h b/src/qemu/qemu_command.h
index c544c9ec67..7dec2cb4af 100644
--- a/src/qemu/qemu_command.h
+++ b/src/qemu/qemu_command.h
@@ -106,13 +106,6 @@ qemuBuildNicDevProps(virDomainDef *def,
 char *qemuDeviceDriveHostAlias(virDomainDiskDef *disk);
 bool qemuDiskBusIsSD(int bus);
 
-qemuBlockStorageSourceAttachData *
-qemuBuildStorageSourceAttachPrepareDrive(virDomainDiskDef *disk,
-                                         virQEMUCaps *qemuCaps);
-
-qemuBlockStorageSourceAttachData *
-qemuBuildStorageSourceAttachPrepareChardev(virDomainDiskDef *disk);
-
 int
 qemuBuildStorageSourceAttachPrepareCommon(virStorageSource *src,
                                           qemuBlockStorageSourceAttachData *data);