diff --git a/build/org.eclipse.cdt.make.core/build.properties b/build/org.eclipse.cdt.make.core/build.properties
index 7a00e9ea7d4..92c5836e59d 100644
--- a/build/org.eclipse.cdt.make.core/build.properties
+++ b/build/org.eclipse.cdt.make.core/build.properties
@@ -5,5 +5,7 @@ bin.includes = plugin.xml,\
                plugin.properties,\
                schema/,\
                builtin/
+src.includes = builtin/,\
+               src/,\
+               schema/
 source.cdtmakecore.jar = src/
-src.includes = builtin/