diff --git a/src/lisp/GNUmakefile b/src/lisp/GNUmakefile
index d0d61043eb95c2b1b9831d5f21d210fbf4bd67a8..d8fb69002dcc6352825cbb29c71e1385bce50ae3 100644
--- a/src/lisp/GNUmakefile
+++ b/src/lisp/GNUmakefile
@@ -12,7 +12,7 @@ FDLIBM = k_sin.c k_cos.c k_tan.c s_sin.c s_cos.c s_tan.c sincos.c \
 	e_acosh.c s_asinh.c e_atanh.c \
 	e_atan2.c \
 	e_rem_pio2.c k_rem_pio2.c \
-	e_log10.c \
+	e_log10.c s_scalbn.c \
 	setexception.c
 
 SRCS = lisp.c coreparse.c alloc.c monitor.c print.c interr.c \