diff --git a/core/checksums/checksums-docs.factor b/core/checksums/checksums-docs.factor
index c352f02af4..9196008ba6 100644
--- a/core/checksums/checksums-docs.factor
+++ b/core/checksums/checksums-docs.factor
@@ -48,4 +48,5 @@ $nl
 { $subsection "checksums.crc32" }
 { $vocab-subsection "MD5 checksum" "checksums.md5" }
 { $vocab-subsection "SHA1 checksum" "checksums.sha1" }
-{ $vocab-subsection "SHA2 checksum" "checksums.sha2" } ;
+{ $vocab-subsection "SHA2 checksum" "checksums.sha2" }
+{ $vocab-subsection "Adler-32 checksum" "checksums.adler-32" } ;