diff --git a/oracle/scripts/initialChecks.js b/oracle/scripts/initialChecks.js
index 3e2ad574..45b9bded 100644
--- a/oracle/scripts/initialChecks.js
+++ b/oracle/scripts/initialChecks.js
@@ -8,6 +8,11 @@ const {
   getTokenType
 } = require('../../commons')
 
+const emptyLogger = {
+  debug: () => {},
+  info: () => {}
+}
+
 async function initialChecks() {
   const { ORACLE_BRIDGE_MODE, COMMON_FOREIGN_RPC_URL, COMMON_FOREIGN_BRIDGE_ADDRESS } = process.env
   let result = {}
@@ -18,7 +23,7 @@ async function initialChecks() {
     result.bridgeableTokenAddress = await bridge.methods.erc20token().call()
   } else if (ORACLE_BRIDGE_MODE === 'ERC_TO_NATIVE') {
     const bridge = new foreignWeb3.eth.Contract(FOREIGN_ERC_TO_NATIVE_ABI, COMMON_FOREIGN_BRIDGE_ADDRESS)
-    result = await getTokensState(bridge)
+    result = await getTokensState(bridge, emptyLogger)
   }
 
   if (ORACLE_BRIDGE_MODE === 'ERC_TO_ERC') {
diff --git a/oracle/src/utils/tokenState.js b/oracle/src/utils/tokenState.js
index 36e4c648..8d2d9863 100644
--- a/oracle/src/utils/tokenState.js
+++ b/oracle/src/utils/tokenState.js
@@ -1,14 +1,25 @@
-async function getTokensState(bridgeContract) {
+async function getTokensState(bridgeContract, logger) {
   const context = {}
-  context.bridgeableTokenAddress = await bridgeContract.methods.erc20token().call()
   try {
+    logger.debug('Getting bridgeable token address')
+    context.bridgeableTokenAddress = await bridgeContract.methods.erc20token().call()
+    logger.debug({ address: context.bridgeableTokenAddress }, 'Token address obtained')
+  } catch (e) {
+    throw new Error(`Bridgeable token address cannot be obtained`)
+  }
+
+  try {
+    logger.debug('Getting Half Duplex token address')
     const halfDuplexErc20tokenAddress = await bridgeContract.methods.halfDuplexErc20token().call()
+    logger.debug({ address: halfDuplexErc20tokenAddress }, 'Half Duplex token address obtained')
     if (halfDuplexErc20tokenAddress !== context.bridgeableTokenAddress) {
       context.halfDuplexTokenAddress = halfDuplexErc20tokenAddress
     } else {
+      logger.info('Migration to support two tokens was not applied')
       context.idle = true
     }
   } catch (e) {
+    logger.info('Old version of contracts is used')
     context.idle = true
   }
 
diff --git a/oracle/src/watcher.js b/oracle/src/watcher.js
index fd202d8d..37a9fd36 100644
--- a/oracle/src/watcher.js
+++ b/oracle/src/watcher.js
@@ -125,11 +125,13 @@ async function checkConditions() {
   let state
   switch (config.id) {
     case 'erc-native-transfer':
-      state = await getTokensState(bridgeContract)
+      logger.debug('Getting token address to listen Transfer events')
+      state = await getTokensState(bridgeContract, logger)
       updateEventContract(state.bridgeableTokenAddress)
       break
     case 'erc-native-half-duplex-transfer':
-      state = await getTokensState(bridgeContract)
+      logger.debug('Getting Half Duplex token address to listen Transfer events')
+      state = await getTokensState(bridgeContract, logger)
       skipEvents = state.idle
       updateEventContract(state.halfDuplexTokenAddress)
       break