diff --git a/src/lib/diff/gen-node.hpp b/src/lib/diff/gen-node.hpp
index 16411afab..cfccf8a3c 100644
--- a/src/lib/diff/gen-node.hpp
+++ b/src/lib/diff/gen-node.hpp
@@ -96,9 +96,7 @@
 #include "lib/error.hpp"
 #include "lib/idi/entry-id.hpp"
 #include "lib/time/timevalue.hpp"
-//#include "lib/util.hpp"
-//#include "lib/format-string.hpp"
-//#include "lib/format-util.hpp"
+//#include "lib/format-util.hpp"        ///////////////////////////////TICKET #973 : investigate the impact of this inclusion on code size
 #include "lib/diff/record.hpp"
 #include "lib/variant.hpp"
 #include "lib/util.hpp"
diff --git a/tests/library/diff/diff-tree-application-test.cpp b/tests/library/diff/diff-tree-application-test.cpp
index 4d112f26f..2b2d77c4f 100644
--- a/tests/library/diff/diff-tree-application-test.cpp
+++ b/tests/library/diff/diff-tree-application-test.cpp
@@ -22,6 +22,7 @@
 
 
 #include "lib/test/run.hpp"
+#include "lib/format-util.hpp"
 #include "lib/diff/tree-diff-application.hpp"
 #include "lib/iter-adapter-stl.hpp"
 #include "lib/time/timevalue.hpp"