diff --git a/src/MDConcLicenses.php b/src/MDConcLicenses.php
index c0c79c4..58a60fb 100644
--- a/src/MDConcLicenses.php
+++ b/src/MDConcLicenses.php
@@ -47,6 +47,7 @@ final class MDConcLicenses implements MDImporterConcordanceListInterface {
         "CC-BY-SA"  => "CC BY-SA",
         "CC.BY-SA"  => "CC BY-SA",
         "CC BY-SA 4.0"  => "CC BY-SA",
+        "CC BY SA 4.0"  => "CC BY-SA",
         "http://creativecommons.org/licenses/by-sa/3.0/" => "CC BY-SA",
         "http://creativecommons.org/licenses/by-sa/3.0/de" => "CC BY-SA",
         "http://creativecommons.org/licenses/by-sa/3.0/de/" => "CC BY-SA",