diff --git a/core/org.eclipse.cdt.core/build.properties b/core/org.eclipse.cdt.core/build.properties
index 29dce884401..d163c48838d 100644
--- a/core/org.eclipse.cdt.core/build.properties
+++ b/core/org.eclipse.cdt.core/build.properties
@@ -28,3 +28,8 @@ source.. = src/,\
            parser/,\
            browser/,\
            utils/
+
+jre.compilation.profile=J2SE-1.4
+javacSource=1.4
+javacTarget=1.4
+           
\ No newline at end of file
diff --git a/core/org.eclipse.cdt.ui/build.properties b/core/org.eclipse.cdt.ui/build.properties
index 9ee3ef65415..5330a7b67f9 100644
--- a/core/org.eclipse.cdt.ui/build.properties
+++ b/core/org.eclipse.cdt.ui/build.properties
@@ -10,7 +10,6 @@
 ###############################################################################
 bin.includes = about.html,\
                plugin.xml,\
-               about.html,\
                icons/,\
                plugin.properties,\
                templates/,\
@@ -26,3 +25,7 @@ javadoc.packages = org.eclipse.cdt.ui.*,\
 source.. = src/,\
            browser/,\
            utils.ui/
+
+jre.compilation.profile=J2SE-1.4
+javacSource=1.4
+javacTarget=1.4