diff --git a/TODO.md b/TODO.md
index d61f631..3fe4ae1 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,4 +1,3 @@
 # TODO
 - Aggiornare README.md
-- getHistoricalData input deve usare mapping.js
 - valore di default di resolution 'D'
\ No newline at end of file
diff --git a/index.js b/index.js
index 68b4d0f..82ca244 100644
--- a/index.js
+++ b/index.js
@@ -1,5 +1,5 @@
 const puppeteer = require('puppeteer');
-const { mapping } = require('./mapping');
+const { getPairId } = require('./mapping');
 const { getJsonContent, mapResponse } = require('./functions');
 const getHistoricalData = require('./src/getHistoricalData');
 
@@ -67,7 +67,7 @@ async function callInvesting(pairId, period, interval, pointscount, pptrLaunchOp
 async function investing(input, period = 'P1M', interval = 'P1D', pointscount = 120, pptrLaunchOptions) {
   try {
     checkParams(input, period, interval, pointscount);
-    const pairId = mapping[input]?.pairId || input;
+    const pairId = getPairId(input);
     const resInvesting = await callInvesting(pairId, period, interval, pointscount, pptrLaunchOptions);
     const results = mapResponse(resInvesting);
     if (!results.length) {
diff --git a/mapping.js b/mapping.js
index 45096d7..401e90e 100644
--- a/mapping.js
+++ b/mapping.js
@@ -1,4 +1,4 @@
-exports.mapping = {
+const mapping = {
   'currencies/eur-usd': {
     pairId: '1',
     title: 'EUR/USD - Euro US Dollar',
@@ -945,3 +945,5 @@ exports.mapping = {
     name: 'PIMCO Commodity Real Return Strategy Institutional',
   },
 };
+
+exports.getPairId = (input) => mapping[input]?.pairId || input;
\ No newline at end of file
diff --git a/src/getHistoricalData.js b/src/getHistoricalData.js
index 7a91411..a9d5b91 100644
--- a/src/getHistoricalData.js
+++ b/src/getHistoricalData.js
@@ -1,8 +1,9 @@
 const { mapResponse } = require('../functions');
+const { getPairId } = require('../mapping');
 
 const buildUrl = ({ input, resolution, from, to } = {}) => {
   const query = new URLSearchParams({
-    symbol: input,
+    symbol: getPairId(input),
     resolution,
     from: from && from.getTime() / 1000,
     to: to && to.getTime() / 1000,
diff --git a/test/getHistoricalData.spec.js b/test/getHistoricalData.spec.js
index dd4f124..cf2bcf0 100644
--- a/test/getHistoricalData.spec.js
+++ b/test/getHistoricalData.spec.js
@@ -120,4 +120,62 @@ describe('Tests for getHistoricalData()', () => {
     ];
     expect(data).toEqual(expected);
   });
+
+  it('should use mapping for input', async () => {
+    scope
+        .get('/d8f62270e64f9eb6e4e6a07c3ffeab0b/1729428526/9/9/16/history')
+        .query({
+          symbol: '1',
+          resolution: 'D',
+          from: 1729123200,
+          to: 1729209600,
+        })
+        .reply(200, {
+          't': [
+            1729123200,
+          ],
+          'c': [
+            1.08309996128082008937099089962430298328399658203125,
+          ],
+          'o': [
+            1.086099982261659935289799250313080847263336181640625,
+          ],
+          'h': [
+            1.0872999429702800977537435755948536098003387451171875,
+          ],
+          'l': [
+            1.0809999704360999661645337255322374403476715087890625,
+          ],
+          'v': [
+            1,
+          ],
+          'vo': [
+            'n/a',
+          ],
+          'vac': [
+            'n/a',
+          ],
+          's': 'ok',
+        });
+
+    const data = await getHistoricalData({
+      input: 'currencies/eur-usd',
+      resolution: 'D',
+      from: new Date(1729123200000),
+      to: new Date(1729209600000),
+    });
+
+    const expected = [
+      {
+        date: 1729123200000,
+        value: 1.08309996128082008937099089962430298328399658203125,
+        price_open: 1.086099982261659935289799250313080847263336181640625,
+        price_high: 1.0872999429702800977537435755948536098003387451171875,
+        price_low: 1.0809999704360999661645337255322374403476715087890625,
+        price_close: 1.08309996128082008937099089962430298328399658203125,
+        volume: 1,
+      },
+    ];
+    expect(data).toEqual(expected);
+  });
 });