diff --git a/README.md b/README.md
index 0e21b25..f2bf3d2 100644
--- a/README.md
+++ b/README.md
@@ -310,25 +310,16 @@ The CSV files consist of an optional header and the following fields:
 * (optional) Version - the version of the package used.
 * (optional) License - the license of the package used
 
-Blank lines and those starting with **#** are ignored.
-
-One example:
+The following example shows the accepted syntax for expressing extra packages:
 
 ```sh
 $ cat yocto-extra.csv
-# Optional Header:
 product,version,license
-
-# Comments start with '#' and are ignored.
-
-avahi, 0.6
-
-# Blank lines are also ignored
-
-bash, 4.0
-bash, 4.1, "GPL 3.0"
-
-busybox
+avahi,0.6
+bash,4.0
+bash,4.1,GPL 3.0
+busybox,
+udev,,"GPLv2.0+, LGPL-2.1+"
 ```
 
 
diff --git a/classes/vigiles.bbclass b/classes/vigiles.bbclass
index a4832c0..c30eb0e 100644
--- a/classes/vigiles.bbclass
+++ b/classes/vigiles.bbclass
@@ -248,12 +248,12 @@ def _get_extra_packages(d):
 
     # Check for a CSV header of e.g. "package,version,license" and skip it
     header = extra_rows[0]
-    if header[0].lower() == "package":
+    if header[0].lower() == "product":
         extra_rows = extra_rows[1:]
 
     for row in extra_rows:
-        pkg = row[0]
-        ver = row[1]
+        pkg = row[0].replace(' ', '-')
+        ver = row[1].replace(' ', '.')
         license = row[2]
         license_key = pkg + ver
 
@@ -261,8 +261,7 @@ def _get_extra_packages(d):
                  (pkg, ver, license_key, license))
 
         pkg_vers = set(additional['additional_packages'].get(pkg, []))
-        if ver:
-            pkg_vers.add(ver)
+        pkg_vers.add(ver)
 
         additional['additional_packages'][pkg] = sorted(list(pkg_vers))
         additional['additional_licenses'][license_key] = license