diff --git a/cpukit/libblock/src/flashdisk.c b/cpukit/libblock/src/flashdisk.c
index d67d4a02bf..b132a40b1f 100644
--- a/cpukit/libblock/src/flashdisk.c
+++ b/cpukit/libblock/src/flashdisk.c
@@ -127,13 +127,6 @@
 #define RTEMS_FDISK_TRACE 1
 #endif
 
-/**
- * Provide a basic boolean type.
- */
-#define bool  int
-#define true  (1)
-#define false (0)
-
 /**
  * The start of a segment has a segment control table. This hold the CRC and
  * block number for the page.