diff --git a/esp8266/Makefile b/esp8266/Makefile
index f6681eefa9..62f1d2a20d 100644
--- a/esp8266/Makefile
+++ b/esp8266/Makefile
@@ -76,6 +76,20 @@ LIB_SRC_C = $(addprefix lib/,\
 	libm/fmodf.c \
 	libm/roundf.c \
 	libm/ef_sqrt.c \
+	libm/kf_rem_pio2.c \
+	libm/kf_sin.c \
+	libm/kf_cos.c \
+	libm/kf_tan.c \
+	libm/ef_rem_pio2.c \
+	libm/sf_sin.c \
+	libm/sf_cos.c \
+	libm/sf_tan.c \
+	libm/sf_frexp.c \
+	libm/sf_modf.c \
+	libm/sf_ldexp.c \
+	libm/asinfacosf.c \
+	libm/atanf.c \
+	libm/atan2f.c \
 	mp-readline/readline.c \
 	netutils/netutils.c \
 	timeutils/timeutils.c \
diff --git a/esp8266/mpconfigport.h b/esp8266/mpconfigport.h
index 53eda128b9..c24c2cc113 100644
--- a/esp8266/mpconfigport.h
+++ b/esp8266/mpconfigport.h
@@ -28,7 +28,7 @@
 #define MICROPY_PY_GC               (1)
 #define MICROPY_PY_ARRAY            (1)
 #define MICROPY_PY_COLLECTIONS      (1)
-#define MICROPY_PY_MATH             (0)
+#define MICROPY_PY_MATH             (1)
 #define MICROPY_PY_CMATH            (0)
 #define MICROPY_PY_IO               (1)
 #define MICROPY_PY_STRUCT           (1)