diff --git a/os/ex/Micron/m25q.h b/os/ex/Micron/m25q.h
index ef6ea2745..87f6981a4 100644
--- a/os/ex/Micron/m25q.h
+++ b/os/ex/Micron/m25q.h
@@ -51,7 +51,7 @@
 /**
  * @brief   M25Q driver version minor number.
  */
-#define EX_M25Q_MINOR          0
+#define EX_M25Q_MINOR           0
 
 /**
  * @brief   M25Q driver version patch number.