diff --git a/py/py.mk b/py/py.mk
index 19ce55a47..27565948d 100644
--- a/py/py.mk
+++ b/py/py.mk
@@ -26,7 +26,7 @@ ifeq ($(MICROPY_PY_USSL),1)
 CFLAGS_MOD += -DMICROPY_PY_USSL=1
 ifeq ($(MICROPY_SSL_AXTLS),1)
 CFLAGS_MOD += -DMICROPY_SSL_AXTLS=1 -I$(TOP)/lib/axtls/ssl -I$(TOP)/lib/axtls/crypto -I$(TOP)/lib/axtls/config
-LDFLAGS_MOD += -Lbuild -laxtls
+LDFLAGS_MOD += -L$(BUILD) -laxtls
 else ifeq ($(MICROPY_SSL_MBEDTLS),1)
 # Can be overridden by ports which have "builtin" mbedTLS
 MICROPY_SSL_MBEDTLS_INCLUDE ?= $(TOP)/lib/mbedtls/include