diff --git a/Makefile b/Makefile
index 340eb89..b7025a3 100644
--- a/Makefile
+++ b/Makefile
@@ -2,9 +2,9 @@ VERSION = 1.0.0
 
 CC     ?= gcc
 CFLAGS ?= -g
-CFLAGS += -W -Wall -pedantic -ansi -std=c99 -DTS_VERSION=\"$(VERSION)\"
+CFLAGS += -W -Wall -pedantic -ansi -std=c99 -DVERSION=\"$(VERSION)\"
 
-# OS X installs ncurses with wide character support, but not as "libncurses"
+# OS X installs ncurses with wide character support, but not as "libncurses".
 ifeq ($(shell uname -s),Darwin)
 	LDFLAGS += -lncurses
 else
diff --git a/src/ttysolitaire.c b/src/ttysolitaire.c
index cbc5442..1bc6a5f 100644
--- a/src/ttysolitaire.c
+++ b/src/ttysolitaire.c
@@ -8,8 +8,8 @@
 #include "keyboard.h"
 #include "common.h"
 
-#ifndef TS_VERSION
-#define TS_VERSION "n/a"
+#ifndef VERSION
+#define VERSION "n/a"
 #endif
 
 const char *program_name;
@@ -127,5 +127,5 @@ void usage(const char *program_name) {
 }
 
 void version() {
-  printf("%s\n", TS_VERSION);
+  printf("%s\n", VERSION);
 }