diff --git a/src/libostree/ostree-repo-static-delta-core.c b/src/libostree/ostree-repo-static-delta-core.c
index 77e7939a..0b0d7067 100644
--- a/src/libostree/ostree-repo-static-delta-core.c
+++ b/src/libostree/ostree-repo-static-delta-core.c
@@ -764,7 +764,7 @@ _ostree_delta_get_endianness (GVariant *superblock,
           }
       }
 
-    return G_BYTE_ORDER;
+    return OSTREE_DELTA_ENDIAN_INVALID;
   }
 }