diff --git a/src/kern/linux/printk.cc b/src/kern/linux/printk.cc
index a19d81b08..e856e2263 100644
--- a/src/kern/linux/printk.cc
+++ b/src/kern/linux/printk.cc
@@ -169,7 +169,7 @@ Printk(stringstream &out, Arguments args)
                   break;
 
                 case 's': {
-                    const char *s = (const char *)args;
+                    const char *s = (char *)args;
                     if (!s)
                         s = "<NULL>";
 
diff --git a/src/sim/arguments.hh b/src/sim/arguments.hh
index 5c7941562..f28f6635a 100644
--- a/src/sim/arguments.hh
+++ b/src/sim/arguments.hh
@@ -137,7 +137,7 @@ class Arguments
     template <class T>
     operator T *() {
         T *buf = (T *)data->alloc(sizeof(T));
-        CopyData(tc, buf, getArg(sizeof(T)), sizeof(T));
+        CopyOut(tc, buf, getArg(sizeof(T)), sizeof(T));
         return buf;
     }