diff --git a/package/mongoose/mongoose.mk b/package/mongoose/mongoose.mk
index 87f56d7894..5faeafb374 100644
--- a/package/mongoose/mongoose.mk
+++ b/package/mongoose/mongoose.mk
@@ -16,7 +16,14 @@ MONGOOSE_CFLAGS = $(TARGET_CFLAGS)
 
 ifeq ($(BR2_PACKAGE_OPENSSL),y)
 MONGOOSE_DEPENDENCIES += openssl
-MONGOOSE_CFLAGS += -DMG_ENABLE_SSL
+MONGOOSE_CFLAGS += \
+	-DMG_ENABLE_SSL \
+	-DMG_SSL_IF=MG_SSL_IF_OPENSSL
+else ifeq ($(BR2_PACKAGE_MBEDTLS),y)
+MONGOOSE_DEPENDENCIES += mbedtls
+MONGOOSE_CFLAGS += \
+	-DMG_ENABLE_SSL \
+	-DMG_SSL_IF=MG_SSL_IF_MBEDTLS
 endif
 
 define MONGOOSE_BUILD_CMDS