diff --git a/packages/react-native-symbolicate/__tests__/__fixtures__/testfile.sectioned.js.map b/packages/react-native-symbolicate/__tests__/__fixtures__/testfile.sectioned.js.map
new file mode 100644
index 000000000..f438264a9
--- /dev/null
+++ b/packages/react-native-symbolicate/__tests__/__fixtures__/testfile.sectioned.js.map
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ibraries/YellowBox/YellowBox.js","node_modules/react-native/Libraries/ReactNative/takeSnapshot.js","node_modules/react-native/Libraries/DeprecatedPropTypes/DeprecatedPointPropType.js","nested-thrower.js","require-node_modules/react-native/Libraries/Core/InitializeCore.js","require-index.js","source-map"]}
diff --git a/packages/react-native-symbolicate/__tests__/symbolicate-test.js b/packages/react-native-symbolicate/__tests__/symbolicate-test.js
index 481f118b3..1c0184edc 100644
--- a/packages/react-native-symbolicate/__tests__/symbolicate-test.js
+++ b/packages/react-native-symbolicate/__tests__/symbolicate-test.js
@@ -50,7 +50,7 @@ const execute = (args: Array<string>, stdin: string): Promise<string> =>
 afterAll(() => {
   try {
     fs.unlinkSync(resolve('testfile.temp.cpuprofile'));
-  } catch {}
+  } catch (e) {}
 });
 
 const TESTFILE_MAP = resolve('testfile.js.map');
@@ -65,6 +65,11 @@ test('symbolicating a single entry', async () =>
     'thrower.js:18:null\n',
   ));
 
+test('symbolicating a sectioned source map', async () =>
+  await expect(
+    execute([resolve('testfile.sectioned.js.map'), '353.js', '1', '72']),
+  ).resolves.toEqual('nested-thrower.js:6:start\n'));
+
 test('symbolicating a profiler map', async () =>
   await expect(
     execute([TESTFILE_MAP, resolve('testfile.profmap')]),
diff --git a/packages/react-native-symbolicate/symbolicate.js b/packages/react-native-symbolicate/symbolicate.js
index 70d82d734..22088042d 100755
--- a/packages/react-native-symbolicate/symbolicate.js
+++ b/packages/react-native-symbolicate/symbolicate.js
@@ -27,7 +27,7 @@ const fs = require('fs');
 const through2 = require('through2');
 
 const argv = process.argv.slice(2);
-if (argv.length < 1 || argv.length > 3) {
+if (argv.length < 1 || argv.length > 4) {
   /* eslint no-path-concat: "off" */
   const usages = [
     'Usage: ' + __filename + ' <source-map-file>',
@@ -109,7 +109,7 @@ if (argv.length === 0) {
   // read-from-argv form.
   let moduleIds, lineNumber, columnNumber;
   if (argv[0].endsWith('.js')) {
-    moduleIds = Symbolication.parseFileName(argv[1]);
+    moduleIds = Symbolication.parseFileName(argv[0]);
     argv.shift();
   } else {
     moduleIds = {segmentId: 0, localId: undefined};