diff --git a/IPhreeqc.h b/IPhreeqc.h
index 0a397f13..3a5280b1 100644
--- a/IPhreeqc.h
+++ b/IPhreeqc.h
@@ -7,7 +7,7 @@
 #include "Var.h"
 
 /**
- * @mainpage IPhreeqc Library Documentation
+ * @mainpage IPhreeqc Library Documentation (@PHREEQC_VER@)
  *
  *  @htmlonly
  *  <table>