diff --git a/cpu/esp32/Makefile.include b/cpu/esp32/Makefile.include
index d1123dfd75..12a4be6e17 100644
--- a/cpu/esp32/Makefile.include
+++ b/cpu/esp32/Makefile.include
@@ -1,6 +1,8 @@
 # ESP32x specific flashing options
 FLASH_CHIP  = $(CPU_FAM)
 
+export ESP32_SDK_DIR ?= $(PKGDIRBASE)/esp32_sdk
+
 # Serial flasher config as used by the ESP-IDF, be careful when overriding them.
 # They have to be exported to use same values in subsequent makefiles.
 ifeq (esp32,$(CPU_FAM))
diff --git a/pkg/esp32_sdk/Makefile.include b/pkg/esp32_sdk/Makefile.include
index d028aa7943..783882473b 100644
--- a/pkg/esp32_sdk/Makefile.include
+++ b/pkg/esp32_sdk/Makefile.include
@@ -1,3 +1 @@
-export ESP32_SDK_DIR ?= $(PKGDIRBASE)/esp32_sdk
-
 PSEUDOMODULES += esp32_sdk