diff --git a/src/version.cc b/src/version.cc
index bf78acd..905aebb 100644
--- a/src/version.cc
+++ b/src/version.cc
@@ -24,4 +24,5 @@
 /* Specification. */
 #include "version.h"
 
+/* Current release version. */
 const char *version_string = "2.7.2";