diff --git a/ChangeLog b/ChangeLog
index c39745588..32850a303 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,6 @@
+2010-10-31 Julien Blache <jb@jblache.org>
+	* doc/descriptions/hp.desc: add SCSI IDs for ScanJet 4c.
+
 2010-10-30 Julien Blache <jb@jblache.org>
 	* backend/xerox_mfp.conf.in, doc/descriptions/xerox_mfp.desc: add
           Samsung SCX 4824 & 4825FN (Debian #601748). Resync desc file with
diff --git a/doc/descriptions/hp.desc b/doc/descriptions/hp.desc
index 00eda947c..8a662c526 100644
--- a/doc/descriptions/hp.desc
+++ b/doc/descriptions/hp.desc
@@ -52,6 +52,7 @@
 :model "ScanJet 4c"
 :interface "SCSI"
 :status :complete
+:scsi "HP" "C2520A" "processor"
 
 :model "ScanJet 4p"
 :interface "SCSI"