diff --git a/core/org.eclipse.cdt.core.qnx/build.properties b/core/org.eclipse.cdt.core.qnx/build.properties
index 99f473dc81f..326cf92e56d 100644
--- a/core/org.eclipse.cdt.core.qnx/build.properties
+++ b/core/org.eclipse.cdt.core.qnx/build.properties
@@ -1,2 +1,3 @@
 bin.includes = fragment.xml,\
                os/
+source.cdt_qnx.jar = src/
\ No newline at end of file
diff --git a/core/org.eclipse.cdt.core.solaris/build.properties b/core/org.eclipse.cdt.core.solaris/build.properties
index 99f473dc81f..95c0ee04bb6 100644
--- a/core/org.eclipse.cdt.core.solaris/build.properties
+++ b/core/org.eclipse.cdt.core.solaris/build.properties
@@ -1,2 +1,3 @@
+source.cdt_solaris.jar = src/
 bin.includes = fragment.xml,\
                os/