diff --git a/cde/programs/dtinfo/dtinfo/wwl/include/WWL/WArgList.h b/cde/programs/dtinfo/dtinfo/wwl/include/WWL/WArgList.h
index 61beed942..93f7f3e53 100644
--- a/cde/programs/dtinfo/dtinfo/wwl/include/WWL/WArgList.h
+++ b/cde/programs/dtinfo/dtinfo/wwl/include/WWL/WArgList.h
@@ -96,6 +96,8 @@ public :
       }
    }
 
+   WArgList(const WArgList &r);
+
    inline ArgList	Args() const	{ return args; }
    inline Cardinal	NumArgs() const { return num_args; }
    inline void		Reset()		{ num_args = 0; }
diff --git a/cde/programs/dtinfo/dtinfo/wwl/src/WArgList.C b/cde/programs/dtinfo/dtinfo/wwl/src/WArgList.C
index 07d6583ee..363e7d82a 100644
--- a/cde/programs/dtinfo/dtinfo/wwl/src/WArgList.C
+++ b/cde/programs/dtinfo/dtinfo/wwl/src/WArgList.C
@@ -162,6 +162,14 @@ WArgList::WArgList (String name, XtArgVal value, ...)
 	va_end (argv);
 }
 
+WArgList::WArgList(const WArgList &r)
+{
+	num_args = r.num_args;
+	alloc_args = num_args;
+	args = new Arg[num_args];
+	memcpy(args, r.args, sizeof(Arg)*num_args);
+}
+
 /*?nodoc?*/
 Arg&
 WArgList::Grow (Cardinal n)