Index: apps/app_chanspy.c
===================================================================
--- apps/app_chanspy.c	(revision 127434)
+++ apps/app_chanspy.c	(working copy)
@@ -283,6 +283,10 @@
 	int res = 0;
 	struct ast_channel *peer = NULL;
 
+    if (!chan) {
+        ast_log(LOG_ERROR, "Called on null channel\n");
+        return -1;
+    }
 	ast_log(LOG_NOTICE, "Attaching %s to %s\n", spychan_name, chan->name);
 
 	res = ast_audiohook_attach(chan, audiohook);