diff --git a/src/pluralkit/errors.py b/src/pluralkit/errors.py
old mode 100644
new mode 100755
index ae084adb..cc676928
--- a/src/pluralkit/errors.py
+++ b/src/pluralkit/errors.py
@@ -45,6 +45,21 @@ class InvalidAvatarURLError(PluralKitError):
         super().__init__("Invalid image URL.")
 
 
+class AvatarHTTPError(PluralKitError):
+    def __init__(self):
+        super().__init__("Avatar could not be retrieved. ")
+
+
+class InvalidAvatarContentTypeError(PluralKitError):
+    def __init__(self):
+        super().__init__("Avatar file type disallowed. (Types: jpg, png, gif)")
+
+
+class AvatarFileSizeTooLargeError(PluralKitError):
+    def __init__(self):
+        super().__init__("Avatar file size too large. (Limit: 1MB)")
+
+
 class AccountInOwnSystemError(PluralKitError):
     def __init__(self):
         super().__init__("That account is already linked to your own system.")
@@ -101,4 +116,5 @@ class InvalidTimeZoneError(PluralKitError):
 
 class TupperboxImportError(PluralKitError):
     def __init__(self):
-        super().__init__("Invalid Tupperbox file.")
\ No newline at end of file
+        super().__init__("Invalid Tupperbox file.")
+