[Minor] Fix DKIM signing changes

diff --git a/src/plugins/lua/dkim_signing.lua b/src/plugins/lua/dkim_signing.lua
index 4b871e472c1e49ef79d2239bb280199ca0e84c53..341cddc94e637156ff0df1af3cc305bbe889c242 100644 (file)
--- a/src/plugins/lua/dkim_signing.lua
+++ b/src/plugins/lua/dkim_signing.lua
@@ -18,6 +18,7 @@ limitations under the License.
 local lutil = require "lua_util"
 local rspamd_logger = require "rspamd_logger"
 local dkim_sign_tools = require "dkim_sign_tools"
+local rspamd_util = require "rspamd_util"
 
 if confighelp then
   return