diff --git a/src/rose/rose_build_merge.cpp b/src/rose/rose_build_merge.cpp
index 09c2175e..121baa52 100644
--- a/src/rose/rose_build_merge.cpp
+++ b/src/rose/rose_build_merge.cpp
@@ -32,6 +32,7 @@
  */
 #include "rose_build_merge.h"
 
+/* just a comment to trigger builds/tests */
 #include "grey.h"
 #include "rose_build.h"
 #include "rose_build_impl.h"