1 files changed, 3 insertions, 0 deletions
diff --git a/graffiti.js b/graffiti.js
index ad456b1..9c5b188 100644
--- a/graffiti.js
+++ b/graffiti.js
@@ -230,6 +230,7 @@ export default class {
   }
 
   objectsByTags(...tags) {
+    tags = tags.filter(tag=> tag!=null)
     for (const tag of tags) {
       if (!(tag in this.tagMap)) {
         throw `You are not subscribed to '${tag}'`
@@ -245,6 +246,7 @@ export default class {
   }
 
   async subscribe(...tags) {
+    tags = tags.filter(tag=> tag!=null)
     // Look at what is already subscribed to
     const subscribingTags = []
     for (const tag of tags) {
@@ -267,6 +269,7 @@ export default class {
   }
 
   async unsubscribe(...tags) {
+    tags = tags.filter(tag=> tag!=null)
     // Decrease the count of each tag,
     // removing and marking if necessary
     const unsubscribingTags = []