diff --git a/cpu/lpc2387/include/cpu_conf.h b/cpu/lpc2387/include/cpu_conf.h
index 02b22435cf..9f37cb9f0f 100644
--- a/cpu/lpc2387/include/cpu_conf.h
+++ b/cpu/lpc2387/include/cpu_conf.h
@@ -52,6 +52,15 @@ extern "C" {
 #define THREAD_STACKSIZE_IDLE      (160)
 /** @} */
 
+/**
+ * @name Pthread configuration
+ * @{
+ */
+/* The idle stack of '160' is not enough to do the 'msg_receive'.
+ * It currently used '164' bytes. */
+#define CONFIG_PTHREAD_REAPER_BASE_STACKSIZE (2*THREAD_STACKSIZE_IDLE)
+/** @} */
+
 /**
  * @name Compiler specifics
  * @{