diff --git a/.gitignore b/.gitignore
index 37205b7..59ad636 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 /.sdk_patch_*
 /esp_iot_sdk_v*/
 /esp_iot_sdk_v*.zip
+/ESP8266_NONOS_SDK_V1.5.1_16_01_08.zip
 /sdk
 /xtensa-lx106-elf/
diff --git a/Makefile b/Makefile
index ef0decf..8e6bd25 100644
--- a/Makefile
+++ b/Makefile
@@ -22,6 +22,8 @@ UNZIP = unzip -q -o
 VENDOR_SDK_ZIP = $(VENDOR_SDK_ZIP_$(VENDOR_SDK))
 VENDOR_SDK_DIR = $(VENDOR_SDK_DIR_$(VENDOR_SDK))
 
+VENDOR_SDK_ZIP_1.5.1 = ESP8266_NONOS_SDK_V1.5.1_16_01_08.zip
+VENDOR_SDK_DIR_1.5.1 = esp_iot_sdk_v1.5.1
 VENDOR_SDK_ZIP_1.5.0 = esp_iot_sdk_v1.5.0_15_11_27.zip
 VENDOR_SDK_DIR_1.5.0 = esp_iot_sdk_v1.5.0
 VENDOR_SDK_ZIP_1.4.0 = esp_iot_sdk_v1.4.0_15_09_18.zip
@@ -159,6 +161,10 @@ $(VENDOR_SDK_DIR)/.dir: $(VENDOR_SDK_ZIP)
 
 sdk_patch: .sdk_patch_$(VENDOR_SDK)
 
+.sdk_patch_1.5.1:
+	$(PATCH) -d $(VENDOR_SDK_DIR_1.5.1) -p1 < c_types-c99.patch
+	@touch $@
+
 .sdk_patch_1.5.0:
 	$(PATCH) -d $(VENDOR_SDK_DIR_1.5.0) -p1 < c_types-c99.patch
 	@touch $@
@@ -251,6 +257,8 @@ sdk_patch: .sdk_patch_$(VENDOR_SDK)
 empty_user_rf_pre_init.o: empty_user_rf_pre_init.c $(TOOLCHAIN)/bin/xtensa-lx106-elf-gcc
 	$(TOOLCHAIN)/bin/xtensa-lx106-elf-gcc -O2 -c $<
 
+ESP8266_NONOS_SDK_V1.5.1_16_01_08.zip:
+	wget --content-disposition "http://bbs.espressif.com/download/file.php?id=1046"
 esp_iot_sdk_v1.5.0_15_11_27.zip:
 	wget --content-disposition "http://bbs.espressif.com/download/file.php?id=989"
 esp_iot_sdk_v1.4.0_15_09_18.zip: