diff --git a/contracts/minters/minter/src/error.rs b/contracts/minters/minter/src/error.rs
index dd80ec8..12bb72d 100644
--- a/contracts/minters/minter/src/error.rs
+++ b/contracts/minters/minter/src/error.rs
@@ -81,12 +81,6 @@ pub enum ContractError {
     #[error("Whitelist is already active")]
     WhitelistAlreadyActive {},
 
-    #[error("Round start time is invalid")]
-    RoundStartTimeInvalid {},
-
-    #[error("Collection not found")]
-    CollectionNotFound {},
-
     #[error("Error saving tokens")]
     ErrorSavingTokens {},
 
diff --git a/contracts/minters/multi-mint-oem/src/error.rs b/contracts/minters/multi-mint-oem/src/error.rs
index b13cf55..dad51fa 100644
--- a/contracts/minters/multi-mint-oem/src/error.rs
+++ b/contracts/minters/multi-mint-oem/src/error.rs
@@ -80,9 +80,6 @@ pub enum ContractError {
     #[error("Round start time is invalid")]
     RoundStartTimeInvalid {},
 
-    #[error("Collection not found")]
-    CollectionNotFound {},
-
     #[error("Error saving tokens")]
     ErrorSavingTokens {},
 
diff --git a/contracts/minters/open-edition-minter/src/error.rs b/contracts/minters/open-edition-minter/src/error.rs
index b13cf55..a71aa83 100644
--- a/contracts/minters/open-edition-minter/src/error.rs
+++ b/contracts/minters/open-edition-minter/src/error.rs
@@ -80,12 +80,6 @@ pub enum ContractError {
     #[error("Round start time is invalid")]
     RoundStartTimeInvalid {},
 
-    #[error("Collection not found")]
-    CollectionNotFound {},
-
-    #[error("Error saving tokens")]
-    ErrorSavingTokens {},
-
     #[error("Public minting ended")]
     PublicMintingEnded {},
 
diff --git a/contracts/whitelists/round-whitelist/src/error.rs b/contracts/whitelists/round-whitelist/src/error.rs
index be6dab0..e9635cb 100644
--- a/contracts/whitelists/round-whitelist/src/error.rs
+++ b/contracts/whitelists/round-whitelist/src/error.rs
@@ -22,18 +22,12 @@ pub enum ContractError {
     #[error("Invalid per address limit")]
     InvalidPerAddressLimit {},
 
-    #[error("Invalid mint price")]
-    InvalidMintPrice {},
-
     #[error("{0}")]
     PaymentError(#[from] PaymentError),
 
     #[error("Invalid end time")]
     InvalidEndTime {},
 
-    #[error("Whitelist frozen")]
-    WhitelistFrozen {},
-
     #[error("Round limit is reached")]
     RoundReachedMintLimit {},
 
@@ -46,9 +40,6 @@ pub enum ContractError {
     #[error("Round start time is invalid")]
     RoundStartTimeInvalid {},
 
-    #[error("Collection not found")]
-    CollectionNotFound {},
-
     #[error("Round does not exist")]
     RoundNotFound {},
 
diff --git a/contracts/whitelists/round-whitelist/src/msg.rs b/contracts/whitelists/round-whitelist/src/msg.rs
index c8be2b8..e9fa776 100644
--- a/contracts/whitelists/round-whitelist/src/msg.rs
+++ b/contracts/whitelists/round-whitelist/src/msg.rs
@@ -1,5 +1,5 @@
 use cosmwasm_schema::cw_serde;
-use cosmwasm_std::{Coin, Timestamp};
+use cosmwasm_std::Coin;
 
 use whitelist_types::Round;