diff --git a/xalan-j2.spec b/xalan-j2.spec
index 4af93a9..2568eb2 100644
--- a/xalan-j2.spec
+++ b/xalan-j2.spec
@@ -22,6 +22,7 @@ Provides:       jaxp_transform_impl
 Requires:       jaxp_parser_impl, /usr/sbin/update-alternatives
 BuildRequires:  ant, xml-commons-apis, bcel, servlet, jlex, java_cup, sed
 BuildRequires:  jpackage-utils >= 0:1.5, java-devel, xerces-j2
+BuildRequires:  eclipse-ecj
 # RHEL3 and FC2
 Obsoletes:	xalan-j <= 0:2.4.1
 # libgcj aot-compiled native libraries