diff --git a/core/include/kernel.h b/core/include/kernel.h
index fb819eb927..bb918a822d 100644
--- a/core/include/kernel.h
+++ b/core/include/kernel.h
@@ -54,6 +54,15 @@
 #error KERNEL_CONF_STACKSIZE_IDLE must be defined per CPU
 #endif
 
+/**
+ * @def KERNEL_CONF_STACKSIZE_PRINTF
+ * @ingroup conf
+ * @brief Size of the task's printf stack in bytes
+ */
+#ifndef KERNEL_CONF_STACKSIZE_PRINTF
+#error KERNEL_CONF_STACKSIZE_PRINTF must be defined per CPU
+#endif
+
 /**
  * @def KERNEL_CONF_STACKSIZE_MAIN
  * @ingroup conf