diff --git a/os/ex/Micron/m25q.h b/os/ex/Micron/m25q.h
index 35bbf10d3..230df9814 100644
--- a/os/ex/Micron/m25q.h
+++ b/os/ex/Micron/m25q.h
@@ -59,14 +59,6 @@
 #define EX_M25Q_PATCH           0
 /** @} */
 
-/**
- * @name    Return codes
- * @{
- */
-#define HAL_SUCCESS             false
-#define HAL_FAILED              true
-/** @} */
-
 /**
  * @name    Command codes
  * @{