diff --git a/deps/mbedtls.mk b/deps/mbedtls.mk
index 07d8304..f17d5e3 100644
--- a/deps/mbedtls.mk
+++ b/deps/mbedtls.mk
@@ -5,7 +5,8 @@ MBEDTLS_SRC = mbedtls-$(MBEDTLS_VER)
 MBEDTLS_URL = https://github.com/ARMmbed/mbedtls/archive/v$(MBEDTLS_VER).tar.gz
 
 MBEDTLS_OPTS := $(CMAKE_COMMON) -DUSE_SHARED_MBEDTLS_LIBRARY=ON \
-    -DUSE_STATIC_MBEDTLS_LIBRARY=OFF -DENABLE_PROGRAMS=OFF -DCMAKE_BUILD_TYPE=Release
+    -DUSE_STATIC_MBEDTLS_LIBRARY=OFF -DENABLE_PROGRAMS=OFF -DCMAKE_BUILD_TYPE=Release \
+    -DMBEDTLS_FATAL_WARNINGS=OFF
 
 MBEDTLS_OPTS += -DENABLE_ZLIB_SUPPORT=OFF
 ifeq ($(BUILD_OS),WINNT)