diff --git a/uisimulator/x11/io.c b/uisimulator/x11/io.c
index 4c1e594047..9551d101bb 100644
--- a/uisimulator/x11/io.c
+++ b/uisimulator/x11/io.c
@@ -13,3 +13,16 @@ DIR *x11_opendir(char *name)
   }
   return opendir(name);
 }
+
+int x11_open(char *name, int opts)
+{
+  char buffer[256]; /* sufficiently big */
+
+  if(name[0] == '/') {
+    sprintf(buffer, "%s/%s", SIMULATOR_ARCHOS_ROOT, name);
+
+    Logf("We open the real file '%s'", buffer);
+    return open(buffer, opts);
+  }
+  return open(name, opts);
+}