diff --git a/CHANGELOG.md b/CHANGELOG.md
index 78ff804b4b9c..4ccb4654a886 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,7 @@
     - `Uint8Array.fromHex`
     - `Uint8Array.prototype.toBase64`
     - `Uint8Array.prototype.toHex`
+- Relaxed some specific cases of [`Number.fromString`](https://github.com/tc39/proposal-number-fromstring) validation before clarification of [proposal-number-fromstring/24](https://github.com/tc39/proposal-number-fromstring/issues/24)
 - Fixed `@@toStringTag` property descriptors on DOM collections, [#1312](https://github.com/zloirock/core-js/issues/1312)
 - Fixed the order of arguments validation in `Array` iteration methods, [#1313](https://github.com/zloirock/core-js/issues/1313)
 - Some minor `atob` / `btoa` improvements
diff --git a/packages/core-js/modules/esnext.number.from-string.js b/packages/core-js/modules/esnext.number.from-string.js
index 59d0ae023e66..f3851ae29df5 100644
--- a/packages/core-js/modules/esnext.number.from-string.js
+++ b/packages/core-js/modules/esnext.number.from-string.js
@@ -35,7 +35,7 @@ $({ target: 'Number', stat: true, forced: true }, {
     var parts = split(string, '.');
     var mathNum = $parseInt(parts[0], R);
     if (parts.length > 1) mathNum += $parseInt(parts[1], R) / pow(R, parts[1].length);
-    if (numberToString(mathNum, R) !== string) throw new $SyntaxError(INVALID_NUMBER_REPRESENTATION);
+    if (R === 10 && numberToString(mathNum, R) !== string) throw new $SyntaxError(INVALID_NUMBER_REPRESENTATION);
     return sign * mathNum;
   }
 });