diff --git a/vulnerabilities/importers/mozilla.py b/vulnerabilities/importers/mozilla.py
index 4d45f9e78..1bca201b5 100644
--- a/vulnerabilities/importers/mozilla.py
+++ b/vulnerabilities/importers/mozilla.py
@@ -130,10 +130,9 @@ def get_package_urls(self, pkgs: List[str]) -> List[PackageURL]:
         package_urls = [
             PackageURL(
                 type="mozilla",
-                # TODO: Improve after https://github.com/mozilla/foundation-security-advisories/issues/76#issuecomment-803082182
                 # pkg is of the form "Firefox ESR 1.21" or "Thunderbird 2.21"
-                name=" ".join(pkg.split(" ")[0:-1]),
-                version=pkg.split(" ")[-1],
+                name=pkg.rsplit(None, 1)[0],
+                version=pkg.rsplit(None, 1)[1],
             )
             for pkg in pkgs
         ]