diff --git a/junit.spec b/junit.spec
index b82ac09..c28cbbe 100644
--- a/junit.spec
+++ b/junit.spec
@@ -72,7 +72,7 @@ sed s/@version@/%{version}/ src/main/java/junit/runner/Version.java.template >sr
 %mvn_file : %{name}
 
 %build
-%mvn_build
+%mvn_build -- -DjdkVersion=1.6
 
 %install
 %mvn_install