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-rw-r--r--cpukit/score/include/rtems/score/heap.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/cpukit/score/include/rtems/score/heap.h b/cpukit/score/include/rtems/score/heap.h
index 7418e0c1ea..30d1bd6846 100644
--- a/cpukit/score/include/rtems/score/heap.h
+++ b/cpukit/score/include/rtems/score/heap.h
@@ -100,7 +100,7 @@ struct Heap_Block_struct {
* to store the flag.
*/
-#define HEAP_PREV_USED 1 /* indicates previous block is in use */
+#define HEAP_PREV_USED 1u /* indicates previous block is in use */
/**
* The following constants reflect various requirements of the