diff --git a/secure/simul_efun/spare/query_idle.c b/secure/simul_efun/spare/query_idle.c
new file mode 100644
index 0000000..93a32ae
--- /dev/null
+++ b/secure/simul_efun/spare/query_idle.c
@@ -0,0 +1,14 @@
+/* This sefun is to provide a replacement for the efun query_idle().
+ * Feel free to add it to your mudlibs, if you have much code relying on that.
+ */
+
+#if ! __EFUN_DEFINED__(query_idle)
+
+#include <interactive_info.h>
+
+int query_idle(object ob)
+{
+    return efun::interactive_info(ob, II_IDLE);
+}
+
+#endif