diff --git a/tools/virsh-host.c b/tools/virsh-host.c
index 293f06e9ed..12c13f5220 100644
--- a/tools/virsh-host.c
+++ b/tools/virsh-host.c
@@ -278,6 +278,7 @@ static const vshCmdOptDef opts_freepages[] = {
     },
     {.name = "pagesize",
      .type = VSH_OT_INT,
+     .completer = virshAllocpagesPagesizeCompleter,
      .help = N_("page size (in kibibytes)")
     },
     {.name = "all",