diff --git a/collections.go b/collections.go
index 5e34561..cd7be58 100644
--- a/collections.go
+++ b/collections.go
@@ -262,7 +262,7 @@ func (c *Collection) ForPublic() {
 	c.URL = c.CanonicalURL()
 }
 
-var isLowerLetter = regexp.MustCompile("[a-z]").MatchString
+var isAvatarChar = regexp.MustCompile("[a-z0-9]").MatchString
 
 func (c *Collection) PersonObject(ids ...int64) *activitystreams.Person {
 	accountRoot := c.FederatedAccount()
@@ -297,7 +297,7 @@ func (c *Collection) PersonObject(ids ...int64) *activitystreams.Person {
 
 func (c *Collection) AvatarURL() string {
 	fl := string(unicode.ToLower([]rune(c.DisplayTitle())[0]))
-	if !isLowerLetter(fl) {
+	if !isAvatarChar(fl) {
 		return ""
 	}
 	return hostName + "/img/avatars/" + fl + ".png"
diff --git a/static/img/avatars/0.png b/static/img/avatars/0.png
new file mode 100644
index 0000000..d806038
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diff --git a/static/img/avatars/1.png b/static/img/avatars/1.png
new file mode 100644
index 0000000..fce503d
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diff --git a/static/img/avatars/2.png b/static/img/avatars/2.png
new file mode 100644
index 0000000..3a2d9af
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diff --git a/static/img/avatars/3.png b/static/img/avatars/3.png
new file mode 100644
index 0000000..3a7be24
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diff --git a/static/img/avatars/4.png b/static/img/avatars/4.png
new file mode 100644
index 0000000..6308a32
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diff --git a/static/img/avatars/5.png b/static/img/avatars/5.png
new file mode 100644
index 0000000..565c883
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diff --git a/static/img/avatars/6.png b/static/img/avatars/6.png
new file mode 100644
index 0000000..52915a6
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diff --git a/static/img/avatars/7.png b/static/img/avatars/7.png
new file mode 100644
index 0000000..81a23de
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diff --git a/static/img/avatars/8.png b/static/img/avatars/8.png
new file mode 100644
index 0000000..1016c8f
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diff --git a/static/img/avatars/9.png b/static/img/avatars/9.png
new file mode 100644
index 0000000..bd86cd5
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