diff --git a/inc/math.h b/inc/math.h
index 923bf7d..41749e4 100644
--- a/inc/math.h
+++ b/inc/math.h
@@ -9,6 +9,7 @@
 
 
 #include <stdint.h>
+#include <stdbool.h>
 
 
 #define FLT_MAX		3.4028234664e+38