diff --git a/modules/img/alg/src/stat_accumulator.hh b/modules/img/alg/src/stat_accumulator.hh
index 3483890b0ced8c3f5e71382f3273fcdcafc68ef0..a07d6219e5dae160cb8198f611d5b38e0ccd4838 100644
--- a/modules/img/alg/src/stat_accumulator.hh
+++ b/modules/img/alg/src/stat_accumulator.hh
@@ -21,6 +21,7 @@
 #define OST_STAT_ACCUMULATOR_HH
 
 #include <ost/base.hh>
+#include <ost/message.hh>
 #include <ost/img/alg/module_config.hh>
 
 namespace ost { namespace img { namespace alg {