diff --git a/src/dehacked.c b/src/dehacked.c
index 0380cc30e..86c09d03a 100644
--- a/src/dehacked.c
+++ b/src/dehacked.c
@@ -9511,6 +9511,7 @@ struct {
 
 	// fixed_t constants, from m_fixed.h
 	{"FRACUNIT",FRACUNIT},
+	{"FU"      ,FRACUNIT},
 	{"FRACBITS",FRACBITS},
 
 	// doomdef.h constants