diff --git a/c/src/lib/libbsp/arm/lpc32xx/include/tm27.h b/c/src/lib/libbsp/arm/lpc32xx/include/tm27.h
index 03f7c238c2..6d508e9cd4 100644
--- a/c/src/lib/libbsp/arm/lpc32xx/include/tm27.h
+++ b/c/src/lib/libbsp/arm/lpc32xx/include/tm27.h
@@ -21,8 +21,6 @@
 #ifndef __tm27_h
 #define __tm27_h
 
-#define MUST_WAIT_FOR_INTERRUPT 0
-
 #include <assert.h>
 
 #include <rtems.h>