diff --git a/src/ripple/data/protocol/BuildInfo.cpp b/src/ripple/data/protocol/BuildInfo.cpp
index 4fae5622be..46ff92d613 100644
--- a/src/ripple/data/protocol/BuildInfo.cpp
+++ b/src/ripple/data/protocol/BuildInfo.cpp
@@ -37,6 +37,9 @@ char const* BuildInfo::getRawVersionString ()
     //
     //  http://semver.org/
     //
+#ifdef DEBUG
+        "+DEBUG"
+#endif
     //--------------------------------------------------------------------------
     ;