1 files changed, 3 insertions, 0 deletions
diff --git a/src/sum.c b/src/sum.c
index 0a7d8ca4e..c2c7fc076 100644
--- a/src/sum.c
+++ b/src/sum.c
@@ -29,6 +29,9 @@
 #include "long-options.h"
 #include "safe-read.h"
 
+/* The official name of this program (e.g., no `g' prefix).  */
+#define PROGRAM_NAME "sum"
+
 /* The name this program was run with. */
 char *program_name;