diff --git a/x-pack/plugins/integration_assistant/public/components/create_integration/create_integration_assistant/steps/data_stream_step/sample_logs_input.test.tsx b/x-pack/plugins/integration_assistant/public/components/create_integration/create_integration_assistant/steps/data_stream_step/sample_logs_input.test.tsx
index af21526b7f14d..a137933afed3f 100644
--- a/x-pack/plugins/integration_assistant/public/components/create_integration/create_integration_assistant/steps/data_stream_step/sample_logs_input.test.tsx
+++ b/x-pack/plugins/integration_assistant/public/components/create_integration/create_integration_assistant/steps/data_stream_step/sample_logs_input.test.tsx
@@ -40,7 +40,7 @@ describe('SampleLogsInput', () => {
   describe('when uploading a json logs sample', () => {
     const type = 'application/json';
 
-    describe('when the file is valid', () => {
+    describe('when the file is valid json', () => {
       const logsSampleRaw = `{"message":"test message 1"},{"message":"test message 2"}`;
       beforeEach(async () => {
         await changeFile(input, new File([`[${logsSampleRaw}]`], 'test.json', { type }));
@@ -73,9 +73,11 @@ describe('SampleLogsInput', () => {
 
     describe('when the file is invalid', () => {
       describe.each([
-        ['[{"message":"test message 1"}', `The logs sample file has not a valid ${type} format`],
+        [
+          '[{"message":"test message 1"}',
+          'Cannot parse the logs sample file as either a JSON or NDJSON file',
+        ],
         ['["test message 1"]', 'The logs sample file contains non-object entries'],
-        ['{"message":"test message 1"}', 'The logs sample file is not an array'],
         ['[]', 'The logs sample file is empty'],
       ])('with logs content %s', (logsSample, errorMessage) => {
         beforeEach(async () => {
@@ -98,7 +100,7 @@ describe('SampleLogsInput', () => {
   describe('when setting a ndjson logs sample', () => {
     const type = 'application/x-ndjson';
 
-    describe('when the file is valid', () => {
+    describe('when the file is valid ndjson', () => {
       const logsSampleRaw = `{"message":"test message 1"}\n{"message":"test message 2"}`;
       beforeEach(async () => {
         await changeFile(input, new File([logsSampleRaw], 'test.json', { type }));
@@ -131,7 +133,10 @@ describe('SampleLogsInput', () => {
 
     describe('when the file is invalid', () => {
       describe.each([
-        ['{"message":"test message 1"]', `The logs sample file has not a valid ${type} format`],
+        [
+          '{"message":"test message 1"}\n{"message": }',
+          'Cannot parse the logs sample file as either a JSON or NDJSON file',
+        ],
         ['"test message 1"', 'The logs sample file contains non-object entries'],
         ['', 'The logs sample file is empty'],
       ])('with logs content %s', (logsSample, errorMessage) => {
diff --git a/x-pack/plugins/integration_assistant/public/components/create_integration/create_integration_assistant/steps/data_stream_step/sample_logs_input.tsx b/x-pack/plugins/integration_assistant/public/components/create_integration/create_integration_assistant/steps/data_stream_step/sample_logs_input.tsx
index 072669a6bdd1d..cb4f735cc707c 100644
--- a/x-pack/plugins/integration_assistant/public/components/create_integration/create_integration_assistant/steps/data_stream_step/sample_logs_input.tsx
+++ b/x-pack/plugins/integration_assistant/public/components/create_integration/create_integration_assistant/steps/data_stream_step/sample_logs_input.tsx
@@ -19,24 +19,34 @@ const MaxLogsSampleRows = 10;
  * Parse the logs sample file content (json or ndjson) and return the parsed logs sample
  */
 const parseLogsContent = (
-  fileContent: string | undefined,
-  fileType: string
+  fileContent: string | undefined
 ): { error?: string; isTruncated?: boolean; logsSampleParsed?: string[] } => {
   if (fileContent == null) {
     return { error: i18n.LOGS_SAMPLE_ERROR.CAN_NOT_READ };
   }
   let parsedContent;
   try {
-    if (fileType === 'application/json') {
+    parsedContent = fileContent
+      .split('\n')
+      .filter((line) => line.trim() !== '')
+      .map((line) => JSON.parse(line));
+
+    // Special case for files that can be parsed as both JSON and NDJSON:
+    //   for a one-line array [] -> extract its contents
+    //   for a one-line object {} -> do nothing
+    if (
+      Array.isArray(parsedContent) &&
+      parsedContent.length === 1 &&
+      Array.isArray(parsedContent[0])
+    ) {
+      parsedContent = parsedContent[0];
+    }
+  } catch (parseNDJSONError) {
+    try {
       parsedContent = JSON.parse(fileContent);
-    } else if (fileType === 'application/x-ndjson') {
-      parsedContent = fileContent
-        .split('\n')
-        .filter((line) => line.trim() !== '')
-        .map((line) => JSON.parse(line));
+    } catch (parseJSONError) {
+      return { error: i18n.LOGS_SAMPLE_ERROR.CAN_NOT_PARSE };
     }
-  } catch (_) {
-    return { error: i18n.LOGS_SAMPLE_ERROR.FORMAT(fileType) };
   }
 
   if (!Array.isArray(parsedContent)) {
@@ -81,10 +91,7 @@ export const SampleLogsInput = React.memo<SampleLogsInputProps>(({ integrationSe
       const reader = new FileReader();
       reader.onload = function (e) {
         const fileContent = e.target?.result as string | undefined; // We can safely cast to string since we call `readAsText` to load the file.
-        const { error, isTruncated, logsSampleParsed } = parseLogsContent(
-          fileContent,
-          logsSampleFile.type
-        );
+        const { error, isTruncated, logsSampleParsed } = parseLogsContent(fileContent);
         setIsParsing(false);
         setSampleFileError(error);
         if (error) {
@@ -137,7 +144,6 @@ export const SampleLogsInput = React.memo<SampleLogsInputProps>(({ integrationSe
           onChange={onChangeLogsSample}
           display="large"
           aria-label="Upload logs sample file"
-          accept="application/json,application/x-ndjson"
           isLoading={isParsing}
           data-test-subj="logsSampleFilePicker"
           data-loading={isParsing}
diff --git a/x-pack/plugins/integration_assistant/public/components/create_integration/create_integration_assistant/steps/data_stream_step/translations.ts b/x-pack/plugins/integration_assistant/public/components/create_integration/create_integration_assistant/steps/data_stream_step/translations.ts
index e4cc004e2673b..0af9f803f71fc 100644
--- a/x-pack/plugins/integration_assistant/public/components/create_integration/create_integration_assistant/steps/data_stream_step/translations.ts
+++ b/x-pack/plugins/integration_assistant/public/components/create_integration/create_integration_assistant/steps/data_stream_step/translations.ts
@@ -126,11 +126,12 @@ export const LOGS_SAMPLE_ERROR = {
       defaultMessage: 'Failed to read the logs sample file',
     }
   ),
-  FORMAT: (fileType: string) =>
-    i18n.translate('xpack.integrationAssistant.step.dataStream.logsSample.errorFormat', {
-      values: { fileType },
-      defaultMessage: 'The logs sample file has not a valid {fileType} format',
-    }),
+  CAN_NOT_PARSE: i18n.translate(
+    'xpack.integrationAssistant.step.dataStream.logsSample.errorCanNotParse',
+    {
+      defaultMessage: 'Cannot parse the logs sample file as either a JSON or NDJSON file',
+    }
+  ),
   NOT_ARRAY: i18n.translate('xpack.integrationAssistant.step.dataStream.logsSample.errorNotArray', {
     defaultMessage: 'The logs sample file is not an array',
   }),