diff --git a/internal/domain/account.go b/internal/domain/account.go
index 12e2b32..97ef2bd 100644
--- a/internal/domain/account.go
+++ b/internal/domain/account.go
@@ -30,7 +30,7 @@ func (acct *Account) NormalizedUsername() string {
 func (acct *Account) Validate() error {
 	return validation.ValidateStruct(acct,
 		validation.Field(&acct.Username, validation.Required, validation.Length(3, 32)),
-		validation.Field(&acct.AccountID, validation.Required, validation.Length(5, 9)),
+		validation.Field(&acct.AccountID, validation.Required, validation.Length(4, 9)),
 	)
 }
 
diff --git a/internal/domain/subreddit.go b/internal/domain/subreddit.go
index b4df1e8..efb2b2e 100644
--- a/internal/domain/subreddit.go
+++ b/internal/domain/subreddit.go
@@ -23,7 +23,7 @@ func (sr *Subreddit) NormalizedName() string {
 func (sr *Subreddit) Validate() error {
 	return validation.ValidateStruct(sr,
 		validation.Field(&sr.Name, validation.Required, validation.Length(3, 32)),
-		validation.Field(&sr.SubredditID, validation.Required, validation.Length(5, 9)),
+		validation.Field(&sr.SubredditID, validation.Required, validation.Length(4, 9)),
 	)
 }
 
diff --git a/internal/domain/user.go b/internal/domain/user.go
index 41787d6..d11aa1d 100644
--- a/internal/domain/user.go
+++ b/internal/domain/user.go
@@ -23,7 +23,7 @@ func (u *User) NormalizedName() string {
 func (u *User) Validate() error {
 	return validation.ValidateStruct(u,
 		validation.Field(&u.Name, validation.Required, validation.Length(3, 32)),
-		validation.Field(&u.UserID, validation.Required, validation.Length(5, 9)),
+		validation.Field(&u.UserID, validation.Required, validation.Length(4, 9)),
 	)
 }