diff --git a/src/headers/tfm.h b/src/headers/tfm.h
index 0e520d5..e03d2f8 100644
--- a/src/headers/tfm.h
+++ b/src/headers/tfm.h
@@ -16,6 +16,15 @@
 #include <ctype.h>
 #include <limits.h>
 
+/* 0xMaMiPaXX
+ * Major
+ * Minor
+ * Patch
+ * XX - undefined
+ */
+#define TFM_VERSION     0x000C0000
+#define TFM_VERSION_S   "0.12"
+
 #ifndef MIN
    #define MIN(x,y) ((x)<(y)?(x):(y))
 #endif
diff --git a/src/misc/fp_ident.c b/src/misc/fp_ident.c
index 6ec820b..1f68efa 100644
--- a/src/misc/fp_ident.c
+++ b/src/misc/fp_ident.c
@@ -15,7 +15,7 @@ const char *fp_ident(void)
 
    memset(buf, 0, sizeof(buf));
    snprintf(buf, sizeof(buf)-1,
-"TomsFastMath\n"
+"TomsFastMath " TFM_VERSION_S "\n"
 #if defined(TFM_IDENT_BUILD_DATE)
 "Built on " __DATE__ " at " __TIME__ "\n"
 #endif