diff --git a/fomerge.c b/fomerge.c
index a5028c82..3556d0da 100644
--- a/fomerge.c
+++ b/fomerge.c
@@ -32,7 +32,8 @@ static pFit fitter = NULL;
 
 /* change this in line with HistMem.h */
 
-typedef int HistInt;
+/* typedef int HistInt; */
+/* commented out by M.Z. (already defined in HistMem.h, g77 complains) */
 
 
 #include "fomerge.h"