diff --git a/cpu/esp8266/include/cpu_conf.h b/cpu/esp8266/include/cpu_conf.h
index 3c29e86f66..96f82a18cb 100644
--- a/cpu/esp8266/include/cpu_conf.h
+++ b/cpu/esp8266/include/cpu_conf.h
@@ -29,18 +29,40 @@ extern "C" {
 #endif
 
 /**
- * @brief   Stack size configuration
+ * @name   Stack size configuration
  * @{
  */
 #ifdef MODULE_ESP_SDK_INT_HANDLING
+
+#ifndef THREAD_EXTRA_STACKSIZE_PRINTF
 #define THREAD_EXTRA_STACKSIZE_PRINTF (0)
-#define THREAD_STACKSIZE_DEFAULT      (2048)
-#define THREAD_STACKSIZE_IDLE         (2048)
-#else
-#define THREAD_EXTRA_STACKSIZE_PRINTF (0)
-#define THREAD_STACKSIZE_DEFAULT      (2048)
-#define THREAD_STACKSIZE_IDLE         (2048)
 #endif
+#ifndef THREAD_STACKSIZE_DEFAULT
+#define THREAD_STACKSIZE_DEFAULT      (1536)
+#endif
+#ifndef THREAD_STACKSIZE_IDLE
+#define THREAD_STACKSIZE_IDLE         (1536)
+#endif
+#ifndef THREAD_STACKSIZE_MAIN
+#define THREAD_STACKSIZE_MAIN         (3072)
+#endif
+
+#else /* MODULE_ESP_SDK_INT_HANDLING */
+
+#ifndef THREAD_EXTRA_STACKSIZE_PRINTF
+#define THREAD_EXTRA_STACKSIZE_PRINTF (0)
+#endif
+#ifndef THREAD_STACKSIZE_DEFAULT
+#define THREAD_STACKSIZE_DEFAULT      (1024)
+#endif
+#ifndef THREAD_STACKSIZE_IDLE
+#define THREAD_STACKSIZE_IDLE         (1024)
+#endif
+#ifndef THREAD_STACKSIZE_MAIN
+#define THREAD_STACKSIZE_MAIN         (3072)
+#endif
+
+#endif /* MODULE_ESP_SDK_INT_HANDLING */
 /** @} */
 
 /**