diff --git a/app/commands/file.py b/app/commands/file.py
index 55323b7f..2e0e2263 100644
--- a/app/commands/file.py
+++ b/app/commands/file.py
@@ -77,7 +77,7 @@ def cli():
 @click.option(
     '-m',
     '--upload-message',
-    default='',
+    default=None,
     required=False,
     help=file_help.file_help_page(file_help.FileHELP.FILE_UPLOAD_M),
     show_default=True,
@@ -103,7 +103,7 @@ def cli():
     '-td',
     default=1,
     required=False,
-    help='The number of thread for upload a file',
+    help='The number of threads for uploading a file.',
     show_default=True,
 )
 @click.option(
@@ -111,7 +111,7 @@ def cli():
     '-o',
     default='./manifest.json',
     required=False,
-    help='The output path for the manifest file of resumable upload',
+    help='The output path for the manifest file of resumable upload.',
     show_default=True,
 )
 @doc(file_help.file_help_page(file_help.FileHELP.FILE_UPLOAD))
diff --git a/app/resources/custom_help.py b/app/resources/custom_help.py
index a3d3122f..03407b8f 100644
--- a/app/resources/custom_help.py
+++ b/app/resources/custom_help.py
@@ -37,25 +37,26 @@ class HelpPage:
             'FILE_SYNC': 'Download files/folders from a given Project/folder/file in core zone.',
             'FILE_UPLOAD': 'Upload files/folders to a given Project path.',
             'FILE_RESUME': 'Resume the upload process with given manifest file.',
-            'FILE_Z': 'Target Zone (i.e., core/greenroom)  [default: greenroom]',
+            'FILE_Z': 'Target Zone (i.e., core/greenroom).',
             'FILE_ATTRIBUTE_P': 'Project Code',
             'FILE_ATTRIBUTE_N': 'Attribute Template Name',
             'FILE_SYNC_ZIP': 'Download files as a zip.',
             'FILE_SYNC_I': 'Enable downloading by geid.',
-            'FILE_SYNC_Z': 'Target Zone (i.e., core/greenroom)',
-            'FILE_UPLOAD_P': 'Project folder path starting from Project code. (i.e., indoctestproject/user/folder)',
-            'FILE_UPLOAD_A': 'File Attribute Template used for annotating files during upload.',
-            'FILE_UPLOAD_T': (
-                'Add a tag to the file. This option could be used multiple times for adding multiple tags.'
+            'FILE_SYNC_Z': 'Target Zone (i.e., core/greenroom).',
+            'FILE_UPLOAD_P': 'Project folder path starting from Project Code. (i.e., indoctestproject/user/folder)',
+            'FILE_UPLOAD_A': 'Add attributes to the file using a File Attribute Template.',
+            'FILE_UPLOAD_T': 'Add tags to the file using a Tag file.',
+            'FILE_UPLOAD_M': 'The message used to comment on the purpose of uploading your processed file.',
+            'FILE_UPLOAD_S': (
+                'Project file path for identifying a source file when creating an upstream '
+                'file lineage node. Source files must exist in the Core zone.'
             ),
-            'FILE_UPLOAD_M': 'The message used to comment on the purpose of uploading your processed file',
-            'FILE_UPLOAD_S': 'The Project path of the source file of your processed files.',
             'FILE_UPLOAD_PIPELINE': (
                 "The processed pipeline of your processed files. [only used with '--source' option]"
             ),
             'FILE_UPLOAD_ZIP': 'Upload folder as a compressed zip file.',
             'FILE_META': 'Download metadata file of a given file in target zone.',
-            'FILE_META_Z': 'Target Zone (i.e., core/greenroom)',
+            'FILE_META_Z': 'Target Zone (i.e., core/greenroom).',
             'FILE_META_G': 'The location of general metadata file',
             'FILE_META_A': 'The location of attribute metadata file',
             'FILE_META_T': 'The location of tag metadata file',