diff --git a/disco/types/guild.py b/disco/types/guild.py
index 572cd5d..474e26a 100644
--- a/disco/types/guild.py
+++ b/disco/types/guild.py
@@ -130,7 +130,7 @@ class Role(SlottedModel):
 
 class GuildBan(SlottedModel):
     user = Field(User)
-    reason = Field(str)
+    reason = Field(unicode)
 
 
 class GuildMember(SlottedModel):