diff --git a/contracts/interfaces/ILendingPoolAddressesProvider.sol b/contracts/interfaces/ILendingPoolAddressesProvider.sol
index cec353d0..2eb16dcc 100644
--- a/contracts/interfaces/ILendingPoolAddressesProvider.sol
+++ b/contracts/interfaces/ILendingPoolAddressesProvider.sol
@@ -20,7 +20,7 @@ interface ILendingPoolAddressesProvider {
   event ProxyCreated(bytes32 id, address indexed newAddress);
   event AddressSet(bytes32 id, address indexed newAddress, bool hasProxy);
 
-  function getMarketId() external returns (string memory);
+  function getMarketId() external view returns (string memory);
 
   function setMarketId(string calldata marketId) external;
 
diff --git a/contracts/protocol/configuration/LendingPoolAddressesProvider.sol b/contracts/protocol/configuration/LendingPoolAddressesProvider.sol
index 9a6fb255..37b2ed8e 100644
--- a/contracts/protocol/configuration/LendingPoolAddressesProvider.sol
+++ b/contracts/protocol/configuration/LendingPoolAddressesProvider.sol
@@ -36,7 +36,7 @@ contract LendingPoolAddressesProvider is Ownable, ILendingPoolAddressesProvider
    * @dev Returns the id of the Aave market to which this contracts points to
    * @return The market id
    **/
-  function getMarketId() external override returns (string memory) {
+  function getMarketId() external view override returns (string memory) {
     return _marketId;
   }