diff --git a/rse/plugins/org.eclipse.rse.core/build.properties b/rse/plugins/org.eclipse.rse.core/build.properties
index d717d175b96..fabd11b67e3 100644
--- a/rse/plugins/org.eclipse.rse.core/build.properties
+++ b/rse/plugins/org.eclipse.rse.core/build.properties
@@ -21,3 +21,6 @@ bin.includes = META-INF/,\
 source.. = src/,\
 	persistence/
 output.. = bin/
+
+javacSource=1.4
+javacTarget=1.4