diff --git a/apps/app_chanspy.c b/apps/app_chanspy.c
index f37de3889c..66a2d214e8 100644
--- a/apps/app_chanspy.c
+++ b/apps/app_chanspy.c
@@ -478,16 +478,15 @@ static struct chanspy_ds *setup_chanspy_ds(struct ast_channel *chan, struct chan
 
 	ast_mutex_lock(&chanspy_ds->lock);
 
-	chanspy_ds->chan = chan;
-
 	if (!(datastore = ast_channel_datastore_alloc(&chanspy_ds_info, NULL))) {
+		ast_mutex_unlock(&chanspy_ds->lock);
 		chanspy_ds = chanspy_ds_free(chanspy_ds);
 		ast_channel_unlock(chan);
 		return NULL;
 	}
-
+	
+	chanspy_ds->chan = chan;
 	datastore->data = chanspy_ds;
-
 	ast_channel_datastore_add(chan, datastore);
 
 	return chanspy_ds;