diff --git a/racket/collects/compiler/private/xform.rkt b/racket/collects/compiler/private/xform.rkt
index ee0520a773..f609110066 100644
--- a/racket/collects/compiler/private/xform.rkt
+++ b/racket/collects/compiler/private/xform.rkt
@@ -894,6 +894,7 @@
 	       _isnan __isfinited __isnanl __isnan
                __isinff __isinfl isnanf isinff __isinfd __isnanf __isnand __isinf
                __inline_isnanl __inline_isnan
+               _Generic
                __inline_isinff __inline_isinfl __inline_isinfd __inline_isnanf __inline_isnand __inline_isinf
                floor floorl ceil ceill round roundl fmod fmodl modf modfl fabs fabsl __maskrune _errno __errno
                isalpha isdigit isspace tolower toupper