diff --git a/programs/amm/src/error.rs b/programs/amm/src/error.rs
index 69724f41..9a7aa65e 100644
--- a/programs/amm/src/error.rs
+++ b/programs/amm/src/error.rs
@@ -20,9 +20,9 @@ pub enum ErrorCode {
     InvaildTickIndex,
     #[msg("The lower tick must be below the upper tick")]
     TickInvaildOrder,
-    #[msg("The tick must be greater, or equal to the minimum tick(-221818)")]
+    #[msg("The tick must be greater, or equal to the minimum tick(-443636)")]
     TickLowerOverflow,
-    #[msg("The tick must be lesser than, or equal to the maximum tick(221818)")]
+    #[msg("The tick must be lesser than, or equal to the maximum tick(443636)")]
     TickUpperOverflow,
     #[msg("tick % tick_spacing must be zero")]
     TickAndSpacingNotMatch,
diff --git a/programs/amm/src/instructions/create_pool.rs b/programs/amm/src/instructions/create_pool.rs
index 22ee1d48..cc8e7d7e 100644
--- a/programs/amm/src/instructions/create_pool.rs
+++ b/programs/amm/src/instructions/create_pool.rs
@@ -28,7 +28,7 @@ pub struct CreatePool<'info> {
     )]
     pub pool_state: AccountLoader<'info, PoolState>,
 
-    /// Token_0 mint, the key must grater then token_1 mint.
+    /// Token_0 mint, the key must be greater then token_1 mint.
     #[account(
         constraint = token_mint_0.key() < token_mint_1.key(),
         mint::token_program = token_program_0
@@ -73,7 +73,7 @@ pub struct CreatePool<'info> {
     )]
     pub token_vault_1: Box<InterfaceAccount<'info, TokenAccount>>,
 
-    /// CHECK: Initialize an account to store oracle observations, the account must be created off-chain, constract will initialzied it
+    /// CHECK: Initialize an account to store oracle observations, the account must be created off-chain, contract will initialize it
     #[account(mut)]
     pub observation_state: UncheckedAccount<'info>,
 
diff --git a/programs/amm/src/states/oracle.rs b/programs/amm/src/states/oracle.rs
index 3877646a..18abc827 100644
--- a/programs/amm/src/states/oracle.rs
+++ b/programs/amm/src/states/oracle.rs
@@ -100,7 +100,7 @@ impl ObservationState {
         Ok(())
     }
 
-    // Writes an oracle observation to the account, returning the next observation_index.
+    /// Writes an oracle observation to the account, returning the next observation_index.
     /// Writable at most once per second. Index represents the most recently written element.
     /// If the index is at the end of the allowable array length (1000 - 1), the next index will turn to 0.
     ///