diff --git a/include/nuttx/semaphore.h b/include/nuttx/semaphore.h
index 1c3b3256dbf..fdf32534f46 100644
--- a/include/nuttx/semaphore.h
+++ b/include/nuttx/semaphore.h
@@ -66,7 +66,7 @@
 
 /* Mutex related helper macros */
 
-#define NXSEM_MBLOCKING_BIT   (((uint32_t)1) << 31)
+#define NXSEM_MBLOCKING_BIT   ((uint32_t)0x80000000)
 #define NXSEM_NO_MHOLDER      ((uint32_t)0x7ffffffe)
 #define NXSEM_MRESET          ((uint32_t)0x7fffffff)