diff --git a/src/fosslight_source/_help.py b/src/fosslight_source/_help.py
index 699be679..746b53c7 100644
--- a/src/fosslight_source/_help.py
+++ b/src/fosslight_source/_help.py
@@ -27,7 +27,8 @@
         Options only for FOSSLight Source Scanner
             -s <scanner>\t   Select which scanner to be run (scancode, scanoss, all)
             -j\t\t\t   Generate raw result of scanners in json format
-            -t <float>\t\t   Stop scancode scanning if scanning takes longer than a timeout in seconds."""
+            -t <float>\t\t   Stop scancode scanning if scanning takes longer than a timeout in seconds.
+            -c <core>\t\t   Select the number of cores to be scanned with ScanCode."""
 
 
 def print_version(pkg_name):