diff --git a/SPECS/lucene.spec b/SPECS/lucene.spec
index cec7bc4..4f247a8 100644
--- a/SPECS/lucene.spec
+++ b/SPECS/lucene.spec
@@ -250,6 +250,7 @@ sed -i -e "/<Export-Package>/a<_nouses>true</_nouses>" dev-tools/maven/pom.xml.t
 
 %build
 export MAVEN_OPTS="-Xmx12G -XX:MaxPermSize=12G"
+export JVM_ARGS="-Xms12G -Xmx12G"
 pushd %{name}
 find -maxdepth 2 -type d -exec mkdir -p '{}/lib' \;