--- a/rmq.h
+++ b/rmq.h
@@ -2,15 +2,12 @@
 #define _rmq_h_
 
 #include <math.h>
-
-#define false 0
-#define true 1
+#include <stdbool.h>
 
 typedef int DT;                 // use long for 64bit-version (but take care of fast log!)
 typedef unsigned int DTidx;     // for indexing in arrays
 typedef unsigned char DTsucc;
 typedef unsigned short DTsucc2;
-typedef int bool;
 DTidx query(DTidx, DTidx);
 void RMQ_succinct(DT* a, DTidx n);
 void RMQ_succinct_destroy(void);