diff --git a/uisimulator/x11/dir.h b/uisimulator/x11/dir.h
index c7d557b475..3e83ce44b4 100644
--- a/uisimulator/x11/dir.h
+++ b/uisimulator/x11/dir.h
@@ -17,10 +17,26 @@
  *
  ****************************************************************************/
 
+#define dirent x11_dirent
+#define readdir(x) x11_readdir(x)
+#define opendir(x) x11_opendir(x)
+
+/*
+ * The defines above should let us use the readdir() and opendir() in target
+ * code just as they're defined to work in target. They will then call our
+ * x11_* versions of the functions that'll work as wrappers for the actual
+ * host functions.
+ */
+
 #include <sys/types.h>
 #include <dirent.h>
 
-#define opendir(x) x11_opendir(x)
+#undef dirent
+
+
+#define DIRFUNCTIONS_DEFINED /* prevent those prototypes */
 
-#define DIRENT_DEFINED /* prevent it from getting defined again */
 #include "../../firmware/common/dir.h"
+
+extern DIR *x11_opendir(char *name);
+
diff --git a/uisimulator/x11/io.c b/uisimulator/x11/io.c
index 2a94969ce3..0452d65ae8 100644
--- a/uisimulator/x11/io.c
+++ b/uisimulator/x11/io.c
@@ -1,5 +1,5 @@
 
-#include <dirent.h>
+#include "dir.h"
 
 #define SIMULATOR_ARCHOS_ROOT "archos"
 
@@ -14,6 +14,19 @@ DIR *x11_opendir(char *name)
   return opendir(name);
 }
 
+struct dirent *x11_readdir(DIR *dir)
+{
+  static struct dirent secret;
+
+  struct x11_dirent *x11 = (readdir)(dir);
+
+  strcpy(secret.d_name, x11->d_name);
+  secret.attribute = (x11->d_type == DT_DIR)?ATTR_DIRECTORY:0;
+
+  return &secret;
+}
+
+
 int x11_open(char *name, int opts)
 {
   char buffer[256]; /* sufficiently big */