2 files changed, 3 insertions, 0 deletions
diff --git a/ext/dl/lib/dl/struct.rb b/ext/dl/lib/dl/struct.rb
index db272081da..9359ca4fcc 100644
--- a/ext/dl/lib/dl/struct.rb
+++ b/ext/dl/lib/dl/struct.rb
@@ -1,4 +1,5 @@
 require 'dl'
+require 'dl/value'
 require 'dl/pack.rb'
 
 module DL
diff --git a/ext/dl/lib/dl/value.rb b/ext/dl/lib/dl/value.rb
index e99e3cf3bf..147d9d120a 100644
--- a/ext/dl/lib/dl/value.rb
+++ b/ext/dl/lib/dl/value.rb
@@ -46,6 +46,8 @@ module DL
     end
 
     def wrap_arg(arg, ty, funcs = [], &block)
+        require 'dl/func'
+
         funcs ||= []
         case arg
         when nil