diff --git a/spec/01-unit/04-prefix_handler_spec.lua b/spec/01-unit/04-prefix_handler_spec.lua
index fe8264c31d4..e246a411f27 100644
--- a/spec/01-unit/04-prefix_handler_spec.lua
+++ b/spec/01-unit/04-prefix_handler_spec.lua
@@ -1425,7 +1425,11 @@ describe("NGINX conf compiler", function()
       local main_inject_conf = prefix_handler.compile_nginx_main_inject_conf(conf)
       assert.matches("lmdb_environment_path%s+dbless.lmdb;", main_inject_conf)
       assert.matches("lmdb_map_size%s+2048m;", main_inject_conf)
-      assert.matches("lmdb_validation_tag%s+%d+%.%d+;", main_inject_conf)
+
+      local kong_meta = require "kong.meta"
+      local major = kong_meta._VERSION_TABLE.major
+      local minor = kong_meta._VERSION_TABLE.minor
+      assert.matches("lmdb_validation_tag%s+" .. major .. "%." .. minor .. ";", main_inject_conf)
     end)
   end)