diff --git a/libraries/javacomm/README b/libraries/javacomm/README
index 67ed13a193..c904211013 100644
--- a/libraries/javacomm/README
+++ b/libraries/javacomm/README
@@ -3,5 +3,5 @@ that provides access to RS-232 hardware (serial ports) and limited access
 to IEEE-1284 hardware (parallel ports).
 
 Note: this is an obsolete version of the Solaris implementation of Javacomm.
-It is intended for use only with JMRI (available at Slackbuilds.org).
+It is intended for use only with jmri.
 It is not necessarily suitable for use with other applications.
diff --git a/libraries/javacomm/javacomm.info b/libraries/javacomm/javacomm.info
index a683a49c38..76aee44e89 100644
--- a/libraries/javacomm/javacomm.info
+++ b/libraries/javacomm/javacomm.info
@@ -5,6 +5,6 @@ DOWNLOAD="http://www.oreilly.com.tw/bookcode/java_io/javacomm20-x86.tar.Z"
 MD5SUM="9eac897bf5233b7cf495eaae5d596804"
 DOWNLOAD_x86_64=""
 MD5SUM_x86_64=""
-REQUIRES=""
+REQUIRES="jdk"
 MAINTAINER="David Spencer"
 EMAIL="nobbutl@yahoo.co.uk"