diff --git a/lib/gssapi/gssapi/gssapi.h b/lib/gssapi/gssapi/gssapi.h
index 2375c5e17..53741c485 100644
--- a/lib/gssapi/gssapi/gssapi.h
+++ b/lib/gssapi/gssapi/gssapi.h
@@ -48,6 +48,7 @@
  */
 
 typedef uint32_t OM_uint32;
+typedef uint64_t OM_uint64;
 
 typedef uint32_t gss_uint32;