diff --git a/build.xml b/build.xml
index e5df521f0..6d61e8eb6 100644
--- a/build.xml
+++ b/build.xml
@@ -1204,14 +1204,15 @@ TEST
     <quick
       srcdir="${src.dir}/library"
       destdir="${strap.dir}/lib/library"
-      usepredefs="no" addparams="${nsc.params}"
+      usepredefs="no"
+      addparams="${nsc.params}" target="jvm-1.4"
       deprecation="yes" unchecked="yes"
       classpath="${strap.dir}/lib/library"
       includes="scala/Predef.scala"/>
     <quick
       srcdir="${src.dir}/library"
       destdir="${strap.dir}/lib/library"
-      addparams="${nsc.params}"
+      addparams="${nsc.params}" target="jvm-1.4"
       deprecation="yes" unchecked="yes"
       classpath="${strap.dir}/lib/library">
       <include name="**/*.scala"/>
@@ -1235,7 +1236,7 @@ TEST
     <quick
       srcdir="${src.dir}/dbc"
       destdir="${strap.dir}/lib/dbc"
-      addparams="${nsc.params}"
+      addparams="${nsc.params}" target="jvm-1.4"
       deprecation="yes" unchecked="yes">
       <classpath>
         <pathelement location="${strap.dir}/lib/library"/>
@@ -1255,7 +1256,7 @@ TEST
     <quick
       srcdir="${src.dir}/actors"
       destdir="${strap.dir}/lib/actors"
-      addparams="${nsc.params}">
+      addparams="${nsc.params}" target="jvm-1.4">
       <classpath>
         <pathelement location="${strap.dir}/lib/library"/>
         <pathelement location="${strap.dir}/lib/actors"/>
@@ -1268,7 +1269,7 @@ TEST
     <quick
       srcdir="${src.dir}/compiler"
       destdir="${strap.dir}/lib/compiler"
-      addparams="${nsc.params}">
+      addparams="${nsc.params}" target="jvm-1.4">
       <classpath>
         <pathelement location="${strap.dir}/lib/library"/>
         <pathelement location="${strap.dir}/lib/compiler"/>
@@ -1295,7 +1296,7 @@ TEST
     <quick
       srcdir="${src.dir}/partest"
       destdir="${strap.dir}/lib/partest"
-      addparams="${nsc.params}"
+      addparams="${nsc.params}" target="jvm-1.4"
       deprecation="yes" unchecked="yes">
       <classpath>
         <pathelement location="${strap.dir}/lib/library"/>